Ceramic Materials Guide: Basic Definitions, Classification Framework, and Research-Task-Oriented Selection (with Product Navigation and Tables 1–4)

I.Research Background and Basic Definitions

1.1 | Why study ceramics today?

Ceramics are not just “clay bowls and pottery.” In modern engineering, ceramics—together with metals and polymers—form the three foundational classes of materials. When you need higher-temperature capability, stronger corrosion resistance, better wear resistance, or more stable electrical/thermal/optical performance, ceramics are often a key option. Reviews in materials science commonly summarize ceramics as offering advantages such as high hardness, high melting point, and chemical inertness, while also having to confront their “built-in drawbacks,” notably brittleness and high sensitivity to defects.

From the standpoint of scientific and industrial drivers, ceramics research has continued to heat up over the past decades for a straightforward reason: many emerging applications (high-temperature structural components, electronic devices, energy and environmental technologies, biomedical uses, etc.) demand reliable operation under harsh conditions. Advanced ceramics are precisely a family of materials engineered and designed around targeted mechanical, electrical, magnetic, and optical functionalities.

1.2 | One-sentence definition: What are “ceramic materials”?

In materials science, a widely used broad definition is:

Ceramics are solid materials—typically inorganic and non-metallic—in which ionic and/or covalent bonding dominates; they can be primarily crystalline, or a combination of crystalline and glassy phases.

The “material genes” of ceramics: the bonding nature (ionic/covalent) strongly influences typical features such as hardness, melting point, chemical stability, and electrical insulation.

1.3 | Don’t mix them up: ceramics vs glass vs glass-ceramics

1. Ceramics: usually dominated by a crystalline phase (though a glassy phase may also be present).

2. Glass: typically amorphous (noncrystalline), serving as a contrast to ceramics that are mostly crystalline.

3. Glass-ceramics: intermediate between the two; generally understood as a multiphase material consisting of a glassy phase + controllably precipitated crystalline phases (often discussed in engineering in terms of microstructure and processing).

Note: Under broader materials-science definitions, glass is also often classified as a type of “ceramic” (amorphous ceramic).

1.4 | Quick terminology table

Term	Minimal definition	Typical examples	Why it matters
Ceramics	Mostly inorganic, non-metallic solids; ionic/covalent bonds dominate; commonly crystalline or crystalline + glassy	Oxide/nitride/carbide engineering ceramics	Determines key strengths (high-temperature, corrosion resistance, wear resistance, electrical insulation) and the “brittleness” drawback
Fine/Advanced ceramics	Composition, microstructure, and processing are precisely controlled to realize specific functions or highly reliable structural performance	Structural ceramics, electronic ceramics, functional ceramics	Emphasizes modern engineering attributes: designability and repeatable performance
Glasses	Mainly amorphous inorganic materials; often broad composition windows	Silicate glass, borosilicate glass	Often differs from ceramics in microstructure and performance routes (e.g., transparency, formability)
Sintering	Key process where powders densify at high temperature, establishing strength and microstructure	—	Core forming–densification route for most engineering ceramics
Microstructure	“Visible internal structure” such as grain size, porosity, second phases	—	Ceramic performance is strongly governed by microstructure—why the same composition can yield different properties

1.5 | Traditional ceramics vs advanced ceramics—what’s the real difference?

A common engineering distinction is:

1. Traditional ceramics: based mainly on natural raw materials and conventional processes (e.g., building ceramics, household ceramics), emphasizing scale and cost.

2. Advanced/fine ceramics: emphasize precise composition control + microstructure design + process control to meet high-performance structural demands or specific functions (electrical/magnetic/optical/ionic conduction, etc.).

II.The “Personality Profile” of Ceramics (Key Characteristics)

2.1 | Starting from the “material genes”: many pros and cons come from the same root cause

Most ceramics are dominated by ionic/covalent bonding → electrons are more localized, bond energies are higher, and the structure is more “rigid.”

This triggers three cascaded consequences:

1. Stronger high-temperature and chemical stability: higher bond energy usually implies higher thermal stability and stronger corrosion/oxidation resistance potential.

2. Often more electrically “insulating”: many ceramics lack the free electrons typical of metals, so they often show low electrical conductivity and good insulation (which also enables dielectric applications).

Remark: Exceptions matter. Through defect/doping engineering or by introducing conductive phases, ceramics can behave as ionic conductors (electrolytes, e.g., stabilized zirconia), semiconductors/conductors (some oxides, carbides, borides, etc.), and even show superconductivity in specific copper-oxide systems.

3. Plastic deformation is more difficult → more “brittle” and more defect-sensitive: ceramics cannot “blunt crack tips” via plastic flow as metals do, so tiny flaws/cracks can dominate fracture and lead to large scatter in strength.

2.2 | Advantage map: what capabilities are ceramics most valued for?

Advantage	Typical manifestation	Why this happens	Common application directions
Hard, wear-resistant	High hardness; resistant to frictional wear	High bond energy and rigid structure; surfaces are less easily “ploughed” into grooves	Bearings/seals, cutting and wear parts, coatings, tribological pairs
High-temperature, oxidation/corrosion resistant	High melting point/high thermal stability; strong chemical inertness	Inorganic lattices are more stable; many systems “hold up” better in oxidizing environments	Refractories, hot-end components, thermal insulation/protective coatings
Electrical insulation / dielectric (also functional)	Insulating, dielectric; a minority can be conductive/semiconductive	Most lack free electrons; conductivity can be engineered via composition/defects	Insulating substrates, dielectric devices, sensors, electrochemical ceramics, etc.

2.3 | Weakness map: common drawbacks and failure risks

Common drawback	Typical symptom	Key cause	How to mitigate risk (materials selection / research focus)
Brittle fracture; low fracture toughness	Once a crack initiates it propagates rapidly; little “warning deformation”	Under tension, stress concentrates at crack tips; limited plasticity to blunt cracks → rapid crack growth	Manage fracture toughness  (critical mode-I fracture toughness) and defect control; use toughening routes when needed (e.g., transformation toughening, fiber toughening)
Large strength scatter; sensitive to machining/surface defects	Same formulation but different batches/processes show very different strength	“Weakest-link” control by pores, inclusions, surface microcracks; limited plasticity to buffer stress concentration	Treat “processing—densification—surface condition—defect statistics” as part of strength management
More sensitive to thermal shock	Cracking or strength loss after rapid temperature changes	Temperature gradients → thermal stress; metals can relieve stress plastically, ceramics tend to respond by cracking	Focus on combined effects of thermal expansion α, thermal conductivity k, elastic modulus E, fracture strength  (strength at fracture), etc.; evaluate thermal-shock retained strength using standards

Summary: 

Ceramic strength is often determined not by the “average structure,” but by the most dangerous defect/crack.

2.4 | Common properties and tests

What you want to prove	Common metrics	The question it answers	Notes / common practice
“How brittle is it? How crack-resistant?”	Fracture toughness	Under what driving force does a crack become unstable and propagate?	is a key metric for brittleness/crack resistance; the test method matters—don’t mix “quick methods” and misjudge
“Is the strength stable and reliable?”	Flexural strength / tensile strength + defect statistics	How defect-dominated is the strength, and how large is the scatter?	Strength data must be interpreted together with defects and surface condition
“Will temperature gradients crack it?”	Post–thermal-shock retained strength; critical ΔT, etc.	Tolerance to sudden temperature changes	Water-quench testing is common; typical evaluation is “flexural-strength retention after quenching at different ΔT / strength-degradation curves.” For example, ASTM C1525 describes an approach for measuring water-quench thermal-shock resistance.
“Is it insulating? Can it provide electrical function?”	Resistivity, dielectric constant, (ionic) conductivity	Application window for insulation/dielectric/conduction	Most ceramics are insulating, but conductive ceramic systems also exist

III.Ceramic Materials Classification Framework

3.1 | Overview: composition families × engineering roles

In engineering practice, “engineering ceramics” are often grouped by use into two broad categories: structural ceramics and functional ceramics (load-bearing/wear/heat resistance vs electrical/magnetic/optical/ionic outputs).

Composition family (What it is made of)	Structural ceramics (load-bearing / wear / heat / corrosion resistance)	Functional ceramics (electrical / magnetic / optical / ionic functions)
Oxide ceramics (Oxides)	Typical tasks: wear resistance, corrosion/oxidation resistance, high-temperature stability, insulating structural parts; common examples: Al₂O₃, ZrO₂, etc.	Typical tasks: dielectric/ferroelectric/piezoelectric, sensing, insulation + electronic-device support; common examples: BaTiO₃ family, PZT family, zirconia-based electrochemical ceramics, etc.
Non-oxide ceramics (Carbides / Nitrides / Borides, etc.)	Typical tasks: more oriented toward “high-temperature structure / wear / thermal shock” windows (system-dependent); common examples: SiC, Si₃N₄, B₄C, etc.	Typical tasks: semiconductor/electro-thermal/sensing, thermal management and packaging, extreme-environment devices; note: advanced ceramics also include routes that are “conductive” and “engineerable for function”
Ceramic matrix composites (CMC, etc.)	Typical tasks: improve damage tolerance / thermal-shock resistance / crack-growth control (making “brittleness” more manageable); common examples: SiC-based and oxide-based CMC routes	Less common but exists (e.g., multi-field coupling, function–structure integration for extreme environments)

3.2 | Microstructure / Phase State (the root cause of “same composition, different performance”)

Authoritative resources such as The American Ceramic Society (ACerS) emphasize that ceramic properties depend not only on composition and bonding, but also strongly on microstructure. Glass is amorphous, while glass-ceramics are multiphase materials consisting of a glassy phase + controllably precipitated crystalline phases.

Microstructure / phase-state label	One-sentence definition	What it means for applications
Dense polycrystalline ceramics	Many grains + grain boundaries; typically formed by powder shaping followed by sintering densification	Strength, toughness, dielectric behavior, optical scattering, etc. are often governed by grain size, porosity, and grain-boundary phases
Glass (amorphous)	No long-range atomic order (amorphous state)	More often discussed in terms of transparency and formability; its logic differs from polycrystalline ceramics (no “grain/grain-boundary” framework)
Glass-ceramics	“Glassy phase + crystalline phases obtained via controlled crystallization”	Often used to combine glass processability with crystalline-phase performance; properties typically lie between those of glass and crystalline ceramics
Porous / honeycomb / membrane ceramics	Pore architecture is intentionally retained	Focus shifts from “maximum strength” to a coupled design of “pore architecture × permeability × retained strength” (filtration/separation/supports)
Single crystals (common for optical / piezoelectric crystals)	A single continuous crystal with no grains or grain boundaries	Properties often vary with crystallographic orientation (strong anisotropy); defect concerns focus more on dislocations/point defects; the “grain-boundary scattering / grain-size” logic of polycrystalline ceramics does not apply

3.3 | Product Form / Delivery Form

Product form	One-sentence intuition	Typical applications / key concerns
Powders / granules	“The raw-material form for making ceramics”	Composition uniformity, particle size and sintering activity, reproducibility (which determine achievable density and microstructure downstream)
Bulk parts / structural components	“Load-bearing and durability”	Wear resistance, corrosion resistance, high-temperature performance, thermal shock, reliability
Substrates / packaging parts	“The skeleton and heat-dissipation pathway of electronic devices”	Electrical insulation, dielectric performance, thermal management, dimensional stability
Coatings / thin films	“Put the function on the surface”	Thermal barrier/protection/wear resistance; electrical or optical functional layers
Fibers / composite reinforcements	“Make brittleness controllable”	CMC toughening, thermal-shock resistance, damage tolerance
Porous bodies / honeycombs / membranes	“Ceramics serving mass transport”	Filtration/separation/catalyst supports/gas treatment (pore architecture + retained strength)

3.4 | Rapid Navigation

Research / engineering task	Recommended classification path	Notes
Need load-bearing performance at wear/corrosion/high temperature	First choose the role: structural ceramics → then choose the family: oxides vs non-oxides → then evaluate microstructure/defects	For load-bearing problems, define “structural” first; screen candidates within the family; finally, use microstructure to determine reliability
Need device functions such as dielectric/piezoelectric/sensing	First choose the role: functional ceramics → then choose the specific functional subclass → then land it by form factor (substrate/film, etc.)	If you force-fit this into “structural” classification, you take a detour; form factor directly determines device implementation
Need filtration/separation/catalyst supports	First choose microstructure: porous/honeycomb/membrane → then choose the composition family → then decide form size and retained strength	For these applications, the first-order variable is pore architecture and permeability, not “hardest/strongest”

IV.Product Navigation Table | Ceramics: Quickly Locate Tables 1–4 by “Research Task / Experimental Need”

Needs / Scenario (Typical Research Task / Experiment)	Which Table to Check First	How to Choose the Table	Representative Products in the Table
Structural ceramics / wear parts / hot-end components: focus on hardness, strength, wear resistance, corrosion resistance, thermal conductivity / thermal shock	Table 1 | Non-oxide structural ceramics / UHTCs / hard materials	The core of these tasks lies in non-oxide and ultra-high-temperature systems such as carbides, nitrides, and borides. The fastest route is to start from “hard phases and matrix materials.”	Silicon nitride, silicon carbide, aluminum nitride, titanium carbide, tantalum carbide, zirconium diboride, titanium diboride, boron carbide, tungsten carbide, lanthanum hexaboride
High-temperature protection / low-friction / release & isolation / anti-sticking coatings (molds, crucibles/boats, heat-treatment fixtures, sintering supports, etc.)	Table 1 | Non-oxide structural ceramics / UHTCs / hard materials	The typical need is surface functionality (lubrication, isolation, anti-sticking/anti-wetting, high-temperature stability). Start with non-oxide surface-functional materials such as h-BN and high-temperature hard-phase systems, then choose a powder formulation or coating route based on the processing method.	Hexagonal boron nitride (h-BN), aluminum nitride, silicon carbide, zirconium diboride / titanium diboride (as extreme-environment benchmarks)
Refractories / kiln furniture / thermal-shock-resistant components / high-temperature fillers (crucibles, furnace linings, corrosion- and wear-resistant parts)	Table 2 | Oxides / bioceramics / optical glasses & glazes / refractory & porous materials	This category leans more toward oxide-based refractory systems and stable fillers, and often involves glaze/body formulations and thermal-shock reliability.	Hafnium(IV) oxide, zircon, aluminum titanate (Al₂TiO₅), calcium oxide, magnesium aluminate spinel, activated alumina spheres
Glazes / ceramic body whitening & opacification; improving wear and chemical resistance (traditional ceramic formulations)	Table 2 | Oxides / bioceramics / optical glasses & glazes / refractory & porous materials	This is typically formulation engineering: whitening, opacification, stability, and mechanical/chemical durability. Start with commonly used oxides/silicates for glazes and fillers.	Zircon, titanium(IV) oxide, calcium oxide, activated alumina spheres
Optical glass / glass-ceramic formulations: tuning refractive index / dispersion and thermal stability	Table 2 | Oxides / bioceramics / optical glasses & glazes / refractory & porous materials	Optical glass often starts from carbonates/oxide raw materials—begin with “common glass-formulation feedstocks.”	Barium carbonate, strontium carbonate, titanium(IV) oxide (and related Ba/Sr sources in Table 4, such as acetates, can support solution-based routes)
Dielectric / ferroelectric / piezoelectric ceramics (capacitors, PTC, piezo transducers, actuators)	Table 3 | Functional / electronic ceramics (dielectric / ferroelectric / piezoelectric / conductive / magnetic)	The core is perovskite/piezo phases and electrical performance. Start from mature functional-ceramic systems to locate the right material and purity grade.	Barium titanate, lead zirconate titanate (PZT), lead titanate, lead(II) zirconate
Electro-optic / acousto-optic / SAW devices and related crystal materials (thin-film/crystal routes)	Table 3 | Functional / electronic ceramics	The goal is typically crystal/epitaxy/device-grade materials—prioritize functional crystals and high-purity precursors.	Lithium niobate, lithium tantalate
Oxide epitaxial films / heterointerfaces (ferroelectrics/superconductors/2DEG, etc.) requiring single-crystal substrates	Table 3 | Functional / electronic ceramics	First identify single-crystal substrates and the matching oxide system—this choice is critical at this stage.	Strontium titanate (single-crystal substrate <100>)
Transparent conductive / gas-sensing / catalysis-related conductive oxides and films (TCOs, electrodes, sensors)	Table 3 | Functional / electronic ceramics	Start with typical functional oxides such as ITO/In₂O₃/SnO₂/ZnO and nano forms, which are convenient for films/coatings.	Indium tin oxide (ITO), nano indium oxide, tin(IV) oxide, zinc oxide
Hard magnets / electromagnetic absorption / microwave materials (magnetic ceramics)	Table 3 | Functional / electronic ceramics	The fastest entry point is directly from ferrite hard-magnetic phases.	Barium ferrite
Sol–gel / wet-chemical routes: aiming for better compositional homogeneity; making thin films/coatings/nanopowders	Table 4 | Synthesis precursors / sol–gel reagents / metal-salt precursors	Success hinges on precursor choice and solution compatibility (alkoxides/silicon sources/nitrates/acetates). Check Table 4 first.	Titanium isopropoxide (tetraisopropyl titanate), aluminum isopropoxide (triisopropyl aluminum), TEOS, TMOS, yttrium nitrate hexahydrate, barium acetate, strontium acetate, lead(II) acetate trihydrate
ZrO₂-related work: stabilization, toughening, coatings/slurries/tape casting (common YSZ routes)	Table 4 | Synthesis precursors (if using wet chemistry) / Table 3 (if using nano dispersions)	For solution/precursor routes, check Table 4; for ready-made nano dispersions or nanoparticles, check Table 3 for ZrO₂ dispersions.	Zirconium(IV) oxide octahydrate (Table 4), zirconium(IV) oxide nanoparticle dispersion (Table 3), yttrium oxide (Table 2; for stabilization/additives)
Elemental analysis (CHNS/halogens, etc.) or consumables/benchmark fillers for high-temperature analytical systems	Table 4 | Elemental-analysis consumables + precursors (same table)	This is an “analysis chain” task rather than a “material body” task—going directly to the analysis consumables in Table 4 is the quickest.	Quartz chips/plates, cerium oxide, silver-plated cobalt oxide

Table 1 | Non-oxide Structural Ceramics / Ultra-High-Temperature Ceramics / Hard Materials / Coatings

Category	CAS No.	Aladdin Cat. No.	Product name	Spec / purity	Key features & applications (ceramics-related)
Structural ceramics | Non-oxide—nitride powder	12033-89-5	S431559	Silicon nitride	Mainly β phase, particle size ≤ 10 μm	β-Si₃N₄ is widely used for high-strength, high-toughness structural ceramics (pressureless sintering / hot pressing). The β phase favors elongated grain growth for toughening; suitable for wear parts, bearings, hot-end components, etc., and also serves as a reinforcing phase in ceramic composites.
Surface-functional ceramics | h-BN powder (high-temperature lubrication / release isolation / anti-sticking)	10043-11-5	B106033	Hexagonal boron nitride	≥99.9% metals basis, 1–2 μm	h-BN is a layered-structure ceramic with hallmark advantages: high-temperature chemical inertness + low friction + electrical insulation. A 1–2 μm grade is suitable as a solid-lubricant additive (for friction reduction in composites/coating formulations), for release/isolation, anti-sticking and anti-wetting/anti-infiltration (typically made into coatings or slurries with binders/solvents), and as a high-temperature interfacial “low-friction/isolation” reference material.
Structural ceramics | Non-oxide—carbide nanopowder	409-21-2	S432704	Silicon carbide	Nanopowder, <100 nm	SiC is a high-hardness, high-thermal-conductivity structural ceramic. Nanopowders facilitate lower-temperature sintering/densification; used in wear parts, thermal-management substrates, composite reinforcement phases, and high-temperature protective-coating research.
Structural ceramics | Non-oxide—nitride nanopowder	24304-00-5	A432363	Aluminum nitride	Nanopowder, ≤100 nm	AlN features high thermal conductivity and low dielectric loss; used for heat-dissipating ceramic substrates in electronic packaging and as electrically insulating, thermally conductive fillers. Nanopowders aid densification and fine-grained microstructure control.
Hardmetals / cermets | WC powder	12070-12-1	T111337	Tungsten carbide	Nanopowder, ≥99.9% metals basis, <10 μm	WC is the core hard phase in cemented carbides: used to prepare WC–Co and related hardmetals, wear-resistant coatings, and cermets. Finer particle sizes help improve hardness and wear resistance, but grain growth must be controlled.
High-purity non-oxide | TiC	12070-08-5	T109302	Titanium carbide	PrimorTrace™, ≥99.99% metals basis	TiC offers high hardness, high melting point, and electrical conductivity; used in cermets, wear-resistant coatings, cutting-tool materials, and as a conductive reinforcement phase. High purity benefits studies of intrinsic electrical/thermal transport.
Nano non-oxide | TiN nanopowder	25583-20-4	T110281	Titanium nitride nanoparticles	≥99.9% metals basis, 20 nm	TiN is conductive, wear-resistant, and corrosion-resistant; used in hard coatings, conductive-ceramic composites, plasma/electrode materials. 20 nm powders are favorable for low-temperature sintering and interfacial-effect studies.
Ultra-high-temperature ceramics | TaC	12070-06-3	T111042	Tantalum carbide	≥99.9% metals basis	TaC is a UHTC (ultra-high-temperature ceramic) with an extremely high melting point and strong wear resistance; used in extreme-environment ablation-resistant materials, nozzle/leading-edge research, and wear-resistant conductive composites.
Structural ceramics | Non-oxide—ultrahard B₄C nanopowder	12069-32-8	B591130	Boron carbide nanoparticles	Industrial grade, ≥98%, ≤200 nm	B₄C is ultrahard, low-density, and wear/corrosion resistant. Nanopowders support lower-temperature densification, wear-resistant composite reinforcement, and research into armor/sandblasting/wear coatings.
Ultra-high-temperature ceramics | ZrB₂	12045-64-6	Z131682	Zirconium diboride	≥99.5% metals basis, excluding Hf, 1–3 μm	ZrB₂ is a representative UHTC with high melting point, high thermal conductivity, and ablation resistance. A 1–3 μm powder suits hot pressing, SPS and related densification routes; commonly studied for leading edges/nozzles/ablation-resistant coatings.
Ultra-high-temperature ceramics | TiB₂	12045-63-5	T305320	Titanium diboride	≥99.5% metals basis, <15 μm	TiB₂ is high-hardness, electrically conductive, and wear-resistant; used in wear-resistant conductive ceramics, materials related to Al electrolysis cathodes/anodes, and as a composite reinforcement phase; also used in wear coatings and electrode-material research.
Rare-earth boride | LaB₆	12008-21-8	L301754	Lanthanum hexaboride	≥99.5% metals basis, powder, ≥325 mesh	LaB₆ has a low work function, good electrical conductivity, and high-temperature stability; used for thermionic emitter cathodes, conductive ceramics, and high-temperature electron sources. Fine powder (≥325 mesh) facilitates pressing and densification.

Table 2 | Oxides / Bioceramics / Raw Materials for Optical Glass & Glazes / Refractory and Porous Structural Materials

Category	CAS No.	Aladdin Cat. No.	Product name	Spec / purity	Key features & applications (ceramics-related)
Bioceramics | Calcium phosphate substrate	1306-06-5	H306080	Hydroxyapatite (HAw)	Circular substrate, diameter 11 ± 1 mm, thickness 3 ± 0.5 mm	A typical calcium-phosphate bioceramic substrate; used as a standardized coupon/reference for surface biomineralization, coating adhesion/interfacial reactions, and cell–material interaction studies.
Phosphate ceramics | Ca₃(PO₄)₂	7758-87-4	C104262	Calcium phosphate	AR, ≥96.0%	A common phosphate-ceramic precursor: used to prepare calcium-phosphate bioceramics (HA-related systems), phosphate glasses/ceramics, and as a flux/reactant source in solid-state reaction studies.
Oxide ceramics | Functional oxide—TiO₂	13463-67-7	T431947	Titanium dioxide (IV)	Premium grade, ≥99%	A common functional-oxide ceramic feedstock: for dielectric/photocatalytic coatings, glazes, and white-ceramic systems; also widely used as a Ti source for synthesizing titanates and complex oxides.
Adsorbent/support ceramics | Shaped activated alumina	1344-28-1	A1492662	Activated alumina balls	General-purpose, for use as an adsorbent	Porous formed Al₂O₃ spheres with wear and heat resistance and high surface area; used as packing for drying/adsorption beds, catalyst supports, and process adsorption/purification (a typical “process ceramic ball” scenario).
Optical glass / transparent-ceramic raw material | Ba source	513-77-9	B759101	Barium carbonate	For optical glass	A classic barium source: used in optical-glass batches to tune refractive index/dispersion; also commonly used as a solid-state precursor for BaTiO₃ dielectric ceramics and other Ba-containing complex oxides.
Optical glass / transparent-ceramic raw material | Sr source	1633-05-2	S759099	Strontium carbonate	For optical glass	A typical strontium source: for optical-glass and luminescent/functional-ceramic formulations; also used as a solid-state precursor for perovskite oxides such as SrTiO₃.
Oxide / refractory feedstock | CaO	1305-78-8	C420198	Calcium oxide	Reagent grade	A basic refractory oxide and formulation component: used in calcium silicate/aluminate ceramics and cement clinker, as a flux and basicity adjuster in glazes/glass. Strongly hygroscopic—store dry.
Oxide ceramics | Rare-earth oxide—Y₂O₃	1314-36-9	Y431838	Yttrium oxide 99+	For analysis, premium reagent, ≥99%	High-melting rare-earth oxide: used as a feedstock or dopant source for transparent/laser ceramics (e.g., YAG-related systems); also used as a zirconia stabilizer/sintering aid to promote densification and high-temperature performance.
Transparent/refractory ceramics | MgAl₂O₄ spinel nanopowder	12068-51-8	M477847	Magnesium aluminate spinel	Nanopowder, particle size <50 nm (BET)	MgAl₂O₄ spinel combines high melting point and chemical stability; used in transparent/refractory ceramics and complex-oxide matrix studies. Nanopowders support low-temperature densification and uniform microstructure development.
Oxide ceramics | Refractory/glaze additive—zircon	10101-52-7	Z102668	Zirconium silicate	Particle size 1.0–1.2 μm	Zircon (ZrSiO₄) is widely used for whitening/opacification of glazes and ceramic bodies, and to improve wear and chemical resistance; also a stable filler for refractories and thermal-barrier/corrosion-resistant coating systems. Micron-sized powders aid dispersion and dense packing.
Oxide ceramics | High-temperature refractory—HfO₂ shaped body	12055-23-1	H431570	Hafnium(IV) oxide	Pellets, diameter × thickness 13 mm × 5 mm	HfO₂ is high-melting and high-density; used in UHT refractories, thermal barriers, and high-temperature dielectric/optical-window studies. Shaped pellets are convenient as reaction/sintering references or for packing in specific setups.
Structural/refractory ceramics | Complex oxide—Al₂TiO₅	12004-39-6	A476426	Aluminum titanate	Powder, ≤50 μm particle size	Al₂TiO₅ has low thermal expansion and strong thermal-shock resistance; used for refractories/kiln furniture/hot-end insulation components. ≤50 μm powders suit forming/sintering and thermal-shock reliability studies.
Nano ceramics | Mesoporous SiO₂ particles	7631-86-9	S433694	Silicon dioxide	Nanoparticles, mesoporous; outer diameter 450–550 nm, pore size 2–4 nm	Mesoporous SiO₂ “hard particles/templates”: used for catalyst supports and adsorption studies, and for controlled construction of pore architecture, surface area, and mass-transport pathways in ceramic composites.

Table 3 | Functional / Electronic Ceramics (Dielectric / Ferroelectric / Piezoelectric / Conductive / Magnetic / Gas-Sensing) and Nano-Form Materials

Category	CAS No.	Aladdin Cat. No.	Product name	Spec / purity	Key features & applications (ceramics-related)
Single-crystal substrate | Oxide single crystal—SrTiO₃	12060-59-2	S431577	Strontium titanate	Single-crystal substrate <100>	SrTiO₃ (<100>) is a widely used perovskite single-crystal substrate for epitaxy: for oxide films/heterostructures (ferroelectric, superconducting, 2D electron gas, etc.) and interface-property studies.
High-purity ferroelectric/dielectric ceramic | BaTiO₃	12047-27-7	B106131	Barium titanate	PrimorTrace™, ≥99.99% metals basis	BaTiO₃ is a classic dielectric/ferroelectric ceramic for capacitor dielectrics, PTC, piezo composites, etc. High purity is suitable as a “benchmark material” and for doping-effect studies.
High-purity piezoelectric/electro-optic ceramic | LiNbO₃	12031-63-9	L113915	Lithium niobate	PrimorTrace™, ≥99.99% metals basis	LiNbO₃ is a key piezoelectric/electro-optic/acousto-optic crystal ceramic material (film/crystal/powder routes); used in modulators, SAW devices, and nonlinear-optics research.
High-purity piezoelectric/ferroelectric ceramic | LiTaO₃	12031-66-2	L283261	Lithium tantalate	≥99.998% metals basis	LiTaO₃ is commonly used in piezoelectric/electro-optic/SAW devices. High purity supports film/crystal research by reducing impurity-driven dielectric loss and optical absorption.
Piezoelectric ceramic powder | PZT (micron powder)	12626-81-2	L770128	Lead zirconate titanate	≥99.99%, particle size 1 μm	PZT is one of the most widely used piezoelectric ceramic systems. A 1 μm powder suits pressing and sintering for piezo transducer/actuator/sensor research (lead-containing systems require compliant handling).
High-purity precursor | PbTiO₃	12060-00-3	L141221	Lead titanate	≥99.9% metals basis, powder	PbTiO₃ is a representative ferroelectric perovskite; used in ferroelectric/piezo thin films and composites, and as an end-member reference for solid solutions such as PZT/PLZT and for phase-diagram comparisons.
Piezo/ferroelectric ceramic precursor | PbZrO₃-related	12060-01-4	L119197	Lead(II) zirconate	≥99.7% metals basis, excluding Hf, Hf ≤1%	PbZrO₃ is a key antiferroelectric/dielectric phase and also an end-member of PZT. Controlling Hf impurities helps in studies sensitive to phase transitions and dielectric loss.
Conductive oxide ceramic | ITO nanopowder	50926-11-9	I432805	Indium tin oxide	Nanopowder, <50 nm	A typical transparent conductive oxide (TCO) powder: used for conductive ceramic targets, transparent conductive films, antistatic coatings, and functional filler systems for electrodes/sensors.
High-purity nanoxide | In₂O₃ nanopowder	1312-43-2	I105868	Indium oxide nanoparticles	PrimorTrace™, ≥99.99% metals basis, <50 nm (TEM)	In₂O₃ nanoparticles are used for transparent conduction/gas sensing/catalysis and as precursors for ITO/IGZO-type systems. High-purity nanoparticles support low-temperature sintering and film preparation.
Oxide ceramics | Functional oxide—SnO₂ feedstock	18282-10-5	T432252	Tin(IV) oxide	Basic grade reagent, for preparation	SnO₂ is used for gas-sensing ceramics, transparent conductors, and catalyst supports; also serves as a Sn source precursor for doped Sn-based conductive oxides and complex-oxide ceramics.
Oxide ceramics | Functional oxide—ZnO	1314-13-2	Z431827	Zinc oxide	Ph. Eur., suitable for analysis, ACS, premium grade	A functional oxide ceramic for ZnO piezo/gas-sensing ceramics, glaze fluxing, and semiconductor thin-film precursors; can also serve as one feedstock for ferrites/spinel complex oxides.
Nano ceramics | Oxide—nanowires	1313-99-1	N431816	Nickel(II) oxide	Nanowires, diameter × L ≈ 20 nm × 10 μm	1D NiO nano-ceramics for gas-sensing/catalysis/electrochemical electrodes and conductive-phase studies in ceramic composites; high aspect ratio helps build continuous conduction and reactive interfaces.
High-purity oxide | MnO (functional-oxide precursor)	1344-43-0	M105458	Manganese(II) oxide	PrimorTrace™, ≥99.99% metals basis	MnO is commonly used as a Mn source for Mn-based spinels/perovskites/ferrites and other magnetic/electrochemical ceramics. High purity suits systems whose transport/magnetic loss is impurity-sensitive.
Nano ceramics | Oxide dispersion	1309-37-1	I431739	Iron(III) oxide, dispersion	Nanoparticles, ≤110 nm, 15 wt.% in ethanol	Ethanol-dispersed Fe₂O₃ nanoparticles enable coating/impregnation/solution blending; used for ferrite precursors, functional coatings, and uniform introduction of iron phases into composites.
Nano ceramics | Oxide dispersion (ZrO₂)	1314-23-4	Z431833	Zirconium(IV) oxide	Nanoparticle dispersion, <100 nm (BET), 5 wt.% in H₂O	Water-dispersed ZrO₂ nanoparticles for dip/spray coating and tape casting to form zirconia coatings, or as toughening fillers. Nano size supports low-temperature densification and fine-grain control.
Magnetic ceramics | Hexaferrite	12047-11-9	B477815	Barium ferrite	≥97% metals basis	Barium hexaferrites such as BaFe₁₂O₁₉ are typical hard magnetic ceramics: used for permanent magnets, microwave absorption, magnetic recording, and EM shielding; suitable for magnetic benchmarking and doping-modification studies.
Oxide ceramics | Rare-earth oxide—La₂O₃ feedstock	1312-81-8	L431805	Lanthanum(III) oxide	Basic grade reagent, for preparation	La₂O₃ is used for rare-earth doping and solid-state synthesis of perovskite ceramics (e.g., LaMnO₃, LaFeO₃, LSM); also used in glass/glaze formulations to tune refractive index and chemical durability.
High-purity precursor | Rare earth / Sc₂O₃	12060-08-1	S110936	Scandium(III) oxide	PrimorTrace™, ≥99.999% metals basis	Ultra-high-purity Sc₂O₃ for doping transparent/laser ceramics and oxide electronic materials, or as a high-purity reference. High purity reduces impurity color centers and electrical scattering, benefiting device-grade feedstocks.

Table 4 | Synthesis Precursors / Sol–Gel Feedstocks / Metal-Salt Precursors + Consumables for Elemental Analysis

Category	CAS No.	Aladdin Cat. No.	Product name	Spec / purity	Key features & applications (ceramics-related)
Ceramic precursor | Metal salt—Pb source	6080-56-4	L112922	Lead(II) acetate trihydrate	Premium reagent, ≥99.5%	Common Pb precursor (solution/wet-chemistry routes) for Pb-based titanates and PZT piezoceramics, or to introduce PbO components. Lead systems require strict safety and compliant waste handling.
Ceramic precursor | Metal salt—Ba source	543-80-6	B432880	Barium acetate	Suitable for analysis, ACS, premium grade	A readily soluble Ba source for solution/sol–gel synthesis of BaTiO₃, BZT/BCT and related dielectric/piezo ceramics; supports compositional homogeneity and low-temperature precursor reactions.
Ceramic precursor | Metal salt—Sr source	543-94-2	S112480	Strontium acetate	AR, ≥99%	A soluble Sr source for solution synthesis of SrTiO₃, Sr-doped perovskites/ferrites and other functional ceramics; facilitates accurate stoichiometry and precursor mixing.
High-purity precursor | Y source (water-soluble salt)	13494-98-9	Y118878	Yttrium nitrate hexahydrate	PrimorTrace™, ≥99.99% metals basis	Readily soluble Y(NO₃)₃·6H₂O for solution doping/impregnation to prepare Y₂O₃ or Y-doped oxides (e.g., YSZ, YAG precursors); supports uniform doping and coating processes.
Ceramic precursor | Metal alkoxide—Al source	555-31-7	A432901	Aluminum isopropoxide (triisopropoxide)	Suitable for synthesis	A highly reactive Al alkoxide, commonly used in sol–gel preparation of high-purity Al₂O₃ powders/films and complex oxides; supports uniform doping and particle-size control.
Ceramic precursor | Metal alkoxide—Ti source (deposition / sol–gel)	546-68-9	T432888	Titanium isopropoxide (tetraisopropyl titanate)	Packaged for deposition systems	A typical Ti alkoxide (TTIP) for sol–gel and as a CVD/ALD precursor in preparing TiO₂ films/coatings and titanate ceramic precursors; “deposition-system packaging” better suits thin-film process chains.
Ceramic precursor | Si source (sol–gel)	78-10-4	T110593	Tetraethyl orthosilicate (TEOS)	Reagent grade, ≥98%	Classic TEOS silica source for sol–gel construction of SiO₂ powders/films/coatings and mesostructures; used for inorganic binder phases, ceramic underlayers, and pore-structure tuning in composites.
Ceramic precursor | Si source (sol–gel)	681-84-5	T110592	Tetramethyl orthosilicate (TMOS)	≥98%	More reactive than TEOS; suitable for high-purity SiO₂ sols/gels and dense or porous silica-based ceramic precursors; commonly used for thin films, mesoporous/aerogel systems, and composite-coating studies.
Ceramic precursor | Zr source (water-soluble zirconium salt)	13520-92-8	Z431979	Zirconyl chloride octahydrate	Suitable for analysis, premium grade	A water-soluble Zr precursor for sol–gel/precipitation routes to prepare ZrO₂ sols, powders, and coatings. Note the introduction of Cl⁻; washing/deionization and downstream process compatibility should be considered.
Oxide precursor | Mg source (calcines to MgO)	1309-48-4	M767093	Magnesium hydroxide	Pharmaceutical grade, ≥98.9%	Mg precursor that converts to MgO upon calcination; used in refractories, Mg-based ceramic formulations, and synthesis of complex oxides such as MgAl₂O₄ spinel. High purity suits benchmark Mg sourcing.
Analysis consumable | Elemental analysis—quartz sheets	14808-60-7	S124530	Quartz plates	For elemental analysis, 3.0–5.0 mm	High-purity, high-temperature-resistant SiO₂ plates for use as supports/isolation/packing components in combustion/adsorption systems for elemental analysis; low background and thermal-shock resistance help stabilize blanks and repeatability.
Analysis consumable | Elemental analysis—oxidation additive	1306-38-3	C124415	Cerium oxide	For elemental analysis, 1.5–2.5 mm	CeO₂ as a strong oxidizing additive/packing improves combustion completeness and conversion efficiency and reduces memory effects; can also serve as a reference oxidative ceramic additive.
Analysis consumable | Elemental analysis—composite oxidant	1307-96-6	C141407	Silver-plated cobalt oxide	For elemental analysis, 0.85–1.7 mm	An Ag/Co oxide composite oxidant commonly used as oxidation-zone packing for elemental analysis; promotes rapid complete oxidation and halogen/sulfur conversion, improving peak shape and recovery.

Note: The above are representative Aladdin products. For more specifications, please refer to the product list at the end of the document or search the Aladdin website using “product name / CAS / catalog number.”

Aladdin: https://www.aladdinsci.com/

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