Tell me about ceramics, and the first useful idea is that ceramics are not simply pottery. Ceramics are a broad family of inorganic, non-metallic materials whose properties come from composition, atomic bonding, crystal structure, porosity and the way powders or shaped bodies are heated and consolidated. Traditional ceramics include bricks, tiles, earthenware, stoneware and porcelain. Advanced ceramics include alumina, zirconia, silicon carbide, silicon nitride, ferrites, piezoelectric materials and many engineered compounds used in electronics, medicine, aerospace, energy systems and industrial machinery. The same family that gives us a cup, a roof tile and a bathroom basin also gives us electrical insulators, furnace linings, cutting tools, oxygen sensors and artificial-joint components.

For the specialist materials-engineering route—sintering, vitrification, porosity, fracture, glazing and advanced ceramic performance—continue to Ceramic Materials Engineering.

People searching for how ceramics are made, what happens when clay is fired, why porcelain is translucent, why ceramics are hard but brittle, what sintering means, how glazes work, or why advanced ceramics survive extreme heat are asking about different parts of one material system. A ceramic begins with chemistry and particle structure, but manufacturing determines how those particles are packed, dried, heated and transformed. Water may make a clay body workable, yet the final ceramic is not simply dried clay. During firing, minerals decompose or react, glassy phases can form, pores shrink, grains bond, and the object becomes a new solid with very different mechanical and chemical behaviour.

This guide explains ceramics from first principles and follows the subject from raw minerals to high-performance engineered components. It covers clay, ceramic powders, shaping, drying, kilns, firing, sintering, vitrification, porosity, grain growth, glazes, thermal shock, fracture, refractories, electrical insulation, piezoelectricity, bioceramics, ceramic coatings, additive manufacturing and quality control. It also works through practical examples, diagnoses common misconceptions and shows why ceramics are chosen when engineers need hardness, heat resistance, corrosion resistance, electrical insulation or dimensional stability. The aim is not to memorize categories. It is to understand how composition plus processing creates a ceramic microstructure, and how that microstructure determines what the material can do.

The 50-second explanation

A ceramic is usually made by starting with inorganic raw materials such as clay minerals, oxides, carbides, nitrides or other powders. Those materials are mixed and shaped while relatively soft or unconsolidated. The shaped body is then dried and heated. Heat removes water and organic additives, drives chemical reactions and allows particles to bond. In many engineered ceramics, the central step is sintering: atoms move across particle boundaries so the compact becomes denser and stronger without simply melting into a puddle.

What makes ceramics distinctive is their atomic bonding. Strong ionic and covalent bonds often give high hardness, high temperature capability and resistance to chemical attack. Those same bond structures provide fewer easy mechanisms for plastic deformation than metals have, so cracks can propagate suddenly. That is why many ceramics are strong in compression, stiff and wear-resistant but comparatively brittle in tension or impact.

Processing is therefore crucial. A pore, scratch, oversized grain or hidden inclusion can become the place where a crack starts. Modern ceramic engineering controls particle size, purity, pressing, firing temperature, atmosphere and finishing to reduce defects and create predictable performance. The result can be anything from a porous flowerpot to a dense zirconia dental crown.

What counts as a ceramic?

Traditional ceramics

Traditional ceramics are based mainly on naturally occurring mineral raw materials. Clay-based pottery, bricks, roof tiles, sanitary ware and porcelain belong here. Their formulations may include clay minerals for plasticity, silica for structure and feldspar or other fluxes that help form glassy phases during firing. These materials are often made at large scale and are deeply connected to construction, domestic life and cultural history.

Advanced ceramics

Advanced, technical or engineering ceramics use carefully controlled powders and compositions chosen for specialized performance. Alumina can provide hardness and electrical insulation. Zirconia can be unusually tough for a ceramic because phase transformations around a crack can resist crack growth. Silicon carbide combines high hardness with high-temperature capability. Silicon nitride can tolerate demanding mechanical and thermal environments. Ferrites provide useful magnetic behaviour, while lead zirconate titanate and related compounds can convert between mechanical strain and electrical signals.

Glass versus ceramic

Glass and ceramics are closely related but not identical categories. Most ordinary glass is amorphous, meaning its atoms lack the long-range periodic crystal structure found in crystalline materials. Ceramics are often crystalline or partly crystalline. Glass-ceramics deliberately begin as glasses and are heat-treated to create controlled crystal populations. The boundary is therefore a materials-science distinction based on structure rather than everyday appearance.

The American Ceramic Society describes ceramics broadly as inorganic, non-metallic materials and explains how strong ionic and covalent bonding contributes to hardness, chemical resistance and high-temperature capability. Its overview of what ceramics are is a useful external route for deeper study.

Why ceramics can be hard, heat-resistant and brittle

Atomic bonding

In metals, atoms share a mobile electron structure that allows planes of atoms to slide through mechanisms called dislocation motion. That ability gives metals ductility: a steel spoon can bend before it breaks. In many ceramics, ionic and covalent bonds are more directional or require charge balance, making easy slip much more difficult. The result is high stiffness and hardness, but less capacity to blunt a growing crack by plastic deformation.

Compression versus tension

Ceramics often tolerate compression extremely well because compression tends to close cracks. Tension does the opposite: it pulls crack faces apart and concentrates stress at the crack tip. A brick wall can support enormous compressive weight, yet a thin ceramic tile can snap if bent because one surface enters tension. Engineers therefore shape and load ceramics carefully.

Defects matter

Strength in brittle materials is strongly influenced by the largest dangerous flaw in the stressed region. Two nominally identical ceramic specimens can fail at different stresses if one contains a larger pore, machining scratch or inclusion. This is why ceramic strength is often treated statistically rather than as a single perfectly repeatable number. Clean processing and polished surfaces can matter as much as nominal chemistry.

Clay: why it can be shaped with water

Many clay minerals are built from extremely small plate-like particles. When mixed with water, those particles can slide and rearrange while electrostatic and surface forces keep the mass coherent. This gives clay plasticity: it can be pressed, coiled, thrown or extruded without immediately crumbling. Different clays vary in particle size, mineralogy, plasticity, colour and firing behaviour.

Water in a clay body exists in more than one sense. Some water simply occupies pores and lubricates particles; this is removed during drying. Other hydroxyl groups are chemically bound within clay minerals and are removed only during heating at higher temperature. Confusing drying with firing misses this chemical transformation.

Potters and industrial producers often blend clay with non-plastic ingredients. Silica can modify shrinkage and thermal behaviour. Feldspar and other fluxes lower the temperature at which liquid or glassy phases form. Grog—pre-fired, crushed ceramic—can reduce shrinkage and improve dimensional control. A workable recipe balances shaping, drying, firing, strength and appearance.

Shaping ceramics before firing

Hand forming and throwing

Traditional hand processes exploit plastic clay. Wheel throwing uses rotation to help center and shape a vessel symmetrically. Coiling builds walls from rolled ropes of clay. Slab construction uses flattened sheets. These methods remain technologically interesting because they reveal how a particulate material can behave almost like a soft continuum before firing.

Slip casting

In slip casting, a fluid suspension of ceramic particles is poured into a porous mold, commonly plaster. The mold draws water out of the suspension, causing a layer of particles to build against the mold wall. Excess slip can be poured out to make hollow shapes. Sanitary ware and complex hollow objects have long used variants of this process.

Dry pressing

Fine powders with binders can be compacted in rigid dies. Pressing creates a “green” part strong enough to handle before firing. Powder flow, pressure distribution and die friction matter because density variations in the green body can turn into warping or defects during sintering.

Extrusion

Extrusion pushes a plastic or paste-like ceramic mixture through a shaped die. Bricks, pipes, honeycomb catalyst supports and many continuous profiles can be made this way. The cross-section is created by the die while the product is cut to length afterward.

Injection molding and additive manufacturing

Advanced ceramic powders can be mixed with polymers and injection molded like plastics. The binder is later removed and the powder body sintered. Additive manufacturing can print ceramic-loaded resins, pastes or powder systems into complex shapes that would be difficult to machine. The printed object still often needs debinding and firing, so printing is only one stage of the ceramic process.

Drying: the hidden stage where many pieces fail

Drying sounds simple, but it is one of the most defect-sensitive stages in traditional ceramics. Water leaves the surface first. If the surface shrinks while the interior remains wet and swollen, tensile stresses can develop. Uneven wall thickness, drafts, direct heat or poor design can produce cracks and warping. Slow, controlled drying allows moisture gradients to equalize.

As clay dries, particles move closer together until they form a more rigid network. Much of the shrinkage occurs before firing. Once the particles are in contact and most free water is gone, further drying causes less dimensional change. Potters refer to intermediate handling states such as leather-hard, when the object is firm but still contains moisture and can be trimmed or joined.

Firing: heat transforms the material

Early heating

At relatively low temperatures, remaining free water evaporates. Organic binders or natural organic matter burn out. If heating is too fast while water remains trapped, steam pressure can crack or even explosively spall a piece. Controlled kiln schedules allow gases to escape.

Dehydroxylation and mineral change

As temperature rises, clay minerals lose chemically bound hydroxyl groups and their crystal structures change. New phases can form. These transformations are irreversible; fired clay cannot simply be rehydrated into its original plastic mineral structure.

Vitrification

At higher temperatures, fluxing components can form a liquid phase that fills pores and binds grains. On cooling, much of that liquid becomes glass. This process is called vitrification. A highly vitrified porcelain body has low porosity and high strength, while an earthenware body may retain substantial open porosity. Too little vitrification gives a weak, absorbent body; too much can cause deformation or bloating.

Sintering

Sintering is the thermally activated bonding and densification of particles. Atoms diffuse across particle contacts, necks between particles grow, pores shrink or change shape, and grains can grow. The process reduces surface energy. A useful mental image is a box of microscopic spheres gradually welding together and removing void space, though real powders have irregular shapes and multiple phases.

Many advanced ceramics are sintered without forming a large liquid fraction. Others use liquid-phase sintering, where a small liquid helps rearrange particles and transport material. Pressure-assisted methods such as hot pressing and hot isostatic pressing can reduce porosity further by combining heat with mechanical pressure.

Porosity: why empty space changes everything

Pores are not just holes. Their volume, size, shape and connectivity strongly affect density, strength, water absorption, thermal insulation, permeability and electrical behaviour. A porous refractory brick can insulate because trapped gas conducts heat poorly. A dense cutting tool needs minimal porosity because pores can start cracks. A ceramic filter deliberately uses interconnected pores to let fluid pass while trapping particles.

Open pores connect to the surface and can absorb liquids. Closed pores are trapped inside. Water-absorption tests therefore provide a practical indicator of open porosity in tiles and pottery. Dense porcelain may absorb very little water, while earthenware can absorb much more unless sealed by glaze.

Glazes: a glassy coating engineered onto a ceramic body

A glaze is a composition applied to a ceramic surface and fired so that it forms a glassy or partly crystalline layer bonded to the body. Glazes can reduce water absorption, improve cleanability, provide colour, create gloss or matte texture, and protect the underlying ceramic. They are materials systems in their own right rather than decorative paint.

Glaze ingredients commonly include silica as a glass former, fluxes to reduce melting temperature and alumina or other stabilizers to control viscosity and durability. Colour can come from transition-metal ions, ceramic pigments or suspended crystals. Kiln atmosphere changes oxidation states and therefore colour in some traditional glazes.

The glaze and body must shrink and expand compatibly. If the thermal expansion mismatch is wrong, the glaze can craze into fine cracks or peel away. A slight compressive state in the glaze is often beneficial, but too much mismatch can damage the ware. What looks like art is also stress engineering.

Earthenware, stoneware and porcelain

Earthenware

Earthenware is generally fired at lower temperatures and remains relatively porous. It is widely used for pottery, decorative ware and some tiles. A glaze can make the surface water-resistant even though the underlying body still absorbs water if exposed.

Stoneware

Stoneware is fired to higher maturity and is denser and less porous than earthenware. The body develops substantial vitrification and strength. It is common in tableware, studio pottery, pipes and chemical-resistant vessels.

Porcelain

Porcelain typically uses refined clay such as kaolin with feldspathic and silica components and is fired to a dense, highly vitrified structure. Thin porcelain can be translucent because low porosity and controlled microstructure reduce light scattering. Its whiteness, hardness and chemical durability made it historically prized for tableware and technically useful for electrical insulation.

Advanced ceramics in engineering

Alumina

Aluminum oxide, or alumina, is one of the most important engineering ceramics. It is hard, electrically insulating, wear-resistant and stable at high temperature. Applications include electrical substrates, seal faces, grinding media, laboratory ware and medical components. Purity and grain size are adjusted for the performance required.

Zirconia

Zirconia can be engineered so that stress near a crack triggers a local crystal-phase transformation accompanied by slight volume expansion. That transformation compresses the crack tip and makes crack growth more difficult. This transformation toughening gives zirconia unusually high fracture toughness for a ceramic and supports uses such as dental restorations and wear components.

Silicon carbide

Silicon carbide is extremely hard, chemically resistant and useful at high temperature. It appears in abrasives, kiln furniture, mechanical seals, power electronics and armor systems. Silicon carbide semiconductors can operate at higher electric fields and temperatures than conventional silicon in many power applications.

Silicon nitride

Silicon nitride combines good strength, relatively low density, thermal-shock resistance and wear performance. Bearings, engine components and demanding mechanical parts can benefit from its properties. Processing is challenging because full densification requires careful additives and firing conditions.

Ceramics in electricity, electronics and sensing

Many ceramics are excellent electrical insulators because their electrons are strongly bound and not free to move through the material. Porcelain insulators have been used on power lines for generations. Alumina substrates electrically isolate components while conducting enough heat to manage device temperature.

Some ceramics do the opposite and are deliberately semiconducting, ion-conducting or ferroelectric. Ferrite ceramics are magnetic and appear in transformer cores, antennas and inductors. Piezoelectric ceramics generate electrical charge when mechanically strained and deform when voltage is applied, enabling buzzers, ultrasonic transducers, precision actuators and sensors.

Solid oxide fuel cells use ceramic electrolytes that conduct oxygen ions at elevated temperature. Oxygen sensors in vehicle exhaust systems use zirconia-based ceramics because their ion conductivity depends on oxygen concentration. These applications show why “ceramic equals insulator” is too simple: chemistry and crystal defects can be engineered to create very different electrical behaviour.

Refractories: ceramics that work where ordinary materials soften

Refractory ceramics line furnaces, kilns, steelmaking vessels, glass tanks, incinerators and reactors. They must survive high temperature, chemical attack, mechanical load and repeated heating cycles. Refractory design balances melting point, thermal expansion, thermal conductivity, porosity and resistance to slags or gases.

A furnace wall is rarely one homogeneous ceramic. Dense hot-face brick may resist chemical attack while lighter insulating refractory behind it reduces heat loss. Expansion joints accommodate thermal movement. Anchors, castables and fiber modules create a complete lining system.

Thermal shock: why hot ceramics sometimes crack suddenly

If a hot ceramic is cooled rapidly, the surface contracts before the interior. The surface can enter tension, and brittle materials dislike tensile stress. If thermal gradients produce a stress larger than the material can tolerate, cracks form. This is thermal shock.

Thermal-shock resistance improves when thermal expansion is low, thermal conductivity is high enough to reduce temperature gradients, strength is high and elastic modulus is not excessive. Geometry matters too: thick sections develop larger gradients than thin ones. A casserole dish designed for thermal cycling therefore uses a composition and shape very different from a decorative low-fired plate.

Fracture toughness and how ceramic designers fight cracks

Fracture toughness measures resistance to crack growth. Traditional brittle ceramics often have low toughness compared with metals. Engineers improve toughness through microstructural design. Zirconia transformation toughening is one route. Fiber or whisker reinforcement can bridge cracks. Layered structures can deflect cracks. Residual compressive stresses can make surface crack opening more difficult.

The key insight is that strength and toughness are not the same. A very hard ceramic may withstand high stress until a flaw becomes critical, then fail abruptly. A tougher material may tolerate a crack and continue carrying load. Safe design requires knowing which property the application needs.

Worked examples: reasoning with ceramic behaviour

Example 1: why a ceramic mug can hold hot coffee but crack on a stove flame

Hot coffee warms the mug relatively gradually from the inside. Direct flame creates a severe local temperature gradient: one region expands while cooler regions resist that expansion. The resulting stress can exceed the mug’s thermal-shock tolerance. The problem is not simply “too hot”; it is too unevenly hot.

Example 2: why porcelain can be less absorbent than flowerpot terracotta

Terracotta is usually fired to a porous structure containing interconnected voids, so water can enter by capillary action. Porcelain is fired to much higher density and vitrification. Its open pore network is far smaller. The difference comes from formulation and firing, not merely surface colour.

Example 3: why a ceramic bearing can outperform steel in a specialized machine

A silicon nitride rolling element is hard, wear-resistant, lighter than steel and electrically insulating. Lower mass reduces centrifugal loading at high speed. The trade-off is higher material and processing cost and a need to avoid impact conditions that exploit brittleness. The best material depends on the whole duty cycle.

Example 4: why a chipped tile becomes easier to break

The chip creates a sharp defect where stress concentrates. Under bending, a crack can start at that defect at lower overall load than in an undamaged tile. Brittle materials are sensitive to surface condition because they have limited plasticity to blunt the crack tip.

Example 5: why ceramic filters are intentionally porous

A filter needs fluid pathways. Manufacturers create controlled connected porosity by using sacrificial pore formers, partial sintering or foam templates. The resulting ceramic remains heat- and corrosion-resistant while allowing gas or liquid to pass. In this application, full density would destroy the function.

Common misconceptions and diagnostic checks

Misconception: ceramics are always made from clay

Clay is central to traditional ceramics, but advanced ceramics can start from highly purified oxide, nitride, carbide or other powders with no clay at all. A silicon carbide mechanical seal and a porcelain cup are both ceramics for very different reasons.

Misconception: firing just removes water

Drying removes much free water. Firing causes irreversible mineral reactions, sintering, grain development and often vitrification. A fired ceramic cannot simply be soaked back into its original clay state.

Misconception: harder means stronger

Hardness is resistance to indentation or scratching. Strength is resistance to failure under load. Toughness is resistance to crack growth and energy absorption. A ceramic can be extremely hard but comparatively brittle. Material selection must distinguish these properties.

Misconception: all white ceramics are porcelain

Colour alone does not identify ceramic type. White earthenware, alumina technical ceramics and porcelain can all appear white. Composition, porosity, firing and microstructure provide the real classification.

Diagnostic: repeated cracks after drying

Check moisture gradients, wall thickness, joins, drying speed and particle packing. A crack appearing before firing usually points to shaping or drying stress rather than kiln temperature itself.

Diagnostic: glaze has a network of fine cracks

This is often crazing caused by thermal expansion mismatch between glaze and body. The glaze ends up in tension as the piece cools. Changing glaze chemistry, body composition or firing schedule can reduce the mismatch.

Practical applications

Buildings and infrastructure

Bricks, tiles, sewer pipes, sanitary ware and refractory products make ceramics fundamental to the built environment. Their fire resistance, weatherability and chemical durability allow long service lives. Surface textures and glazes add design possibilities without abandoning structural function.

Medicine and dentistry

Alumina and zirconia can be biocompatible, wear-resistant and visually suitable for dental restorations. Calcium-phosphate ceramics resemble mineral phases found in bone and can support bone repair. Medical applications demand extraordinary control over purity, surfaces and fracture reliability.

Electronics

Ceramic packages, substrates, capacitors, piezoelectric resonators, magnetic cores and insulators are everywhere inside electronics. Their role is often invisible because the visible product is plastic or metal while ceramic components handle heat, voltage, frequency or sensing inside.

Transportation

Ceramic catalyst substrates support emissions-control coatings in vehicles. Oxygen sensors rely on ion-conducting ceramics. Ceramic matrix composites and thermal-barrier coatings help hot engine sections withstand higher temperatures. Brake and bearing applications use ceramic phases where wear or heat performance justifies the cost.

Energy

Electrical insulators, fuel-cell electrolytes, battery separators, nuclear-fuel forms and high-temperature coatings all use ceramic science. Energy systems often operate in environments that combine heat, voltage, corrosion and radiation—conditions where polymers or ordinary metals can struggle.

Quality control in ceramic manufacturing

Because defects matter so much, ceramic manufacturing measures raw-material chemistry, particle-size distribution, moisture, green density, firing temperature, shrinkage, porosity and dimensions. High-value technical ceramics may also use X-ray inspection, ultrasonic methods, dye penetrants, microscopy or proof testing to find critical defects.

Kiln uniformity is especially important. A few degrees of temperature difference or changes in oxygen availability can alter colour, phase formation or density. Modern industrial kilns use programmed heating zones, controlled atmospheres and continuous monitoring to make large batches repeatable.

Sustainability and ceramic life cycles

Ceramics can last for centuries, which reduces replacement demand, but firing requires substantial energy. Cementitious and fired-clay sectors therefore investigate lower-temperature processing, alternative fuels, waste-heat recovery and formulation changes. Advanced ceramics can also save energy during use by enabling hotter, more efficient engines or durable electrical components.

Recycling ceramics is challenging because fired products cannot simply be remelted like many metals. Crushed brick and tile can become aggregate, road base, grog or raw material for some products. High-purity technical ceramic scrap may be recycled through more specialized processes. Design for long life often provides the biggest environmental benefit.

Frequently asked questions

Why are ceramics brittle?

Strong ionic and covalent bonding limits easy plastic deformation. When a crack forms, the material cannot always redistribute stress by yielding, so cracks can propagate suddenly. Microstructure and toughening methods can improve this behaviour but do not make ceramics behave exactly like ductile metals.

What temperature are ceramics fired at?

There is no single firing temperature. Earthenware, stoneware, porcelain, refractories and advanced ceramics use very different schedules, sometimes from below 1,000°C to well above 1,500°C. The correct temperature depends on chemistry, desired phases and densification.

What is bisque firing?

Bisque firing is an initial firing that converts fragile dried clay into a durable porous ceramic body. The piece can then be handled and glazed more easily before a later glaze firing. Not every ceramic process uses this two-stage route.

Why is porcelain translucent?

Thin porcelain can transmit light because it is highly vitrified and contains relatively little open porosity. Controlled crystal size and glassy phase reduce scattering enough for some light to pass through. Thickness still matters greatly.

Are ceramic knives sharper than steel?

Zirconia ceramic blades can hold a very sharp edge because they are hard and wear-resistant. Their trade-off is brittleness: side loads, twisting or impacts can chip the edge more easily than a tough steel blade. They suit slicing rather than prying.

Can ceramics conduct electricity?

Many ceramics are excellent insulators, but some are semiconductors, ionic conductors, superconductors or piezoelectric materials. Electrical behaviour depends on chemistry, crystal structure, temperature and defects.

Why do ceramic plates chip at the rim?

Edges experience concentrated contact forces and have less surrounding material to distribute impact. A tiny chip also becomes a new stress concentrator that can initiate later cracks. Rounded, reinforced rims improve durability.

What is ceramic glaze made of?

Most glazes combine glass formers such as silica, fluxes that reduce melting temperature, stabilizers such as alumina and optional colourants or opacifiers. Recipes are tuned to the ceramic body and firing temperature.

Why are bathroom tiles easy to clean?

Dense ceramic bodies and glassy glazes create hard, chemically resistant surfaces with low absorption. Dirt and water remain largely at the surface rather than soaking into a fibrous material. Grout behaves differently and may need sealing or cleaning.

Can ceramic be welded?

Conventional metal welding is usually unsuitable because ceramics do not melt and flow in the same forgiving way and are sensitive to thermal stress. Ceramics can be joined using brazing, glass seals, adhesives, diffusion bonding or specialized laser and reaction processes.

Why are spark plugs ceramic?

The insulator around the center electrode must survive high voltage, combustion heat and chemical attack while electrically isolating the conductor from the metal shell. Dense alumina ceramics perform this combination well.

What is a ceramic matrix composite?

It is a composite in which a ceramic matrix is reinforced with fibers or other phases. Reinforcement can bridge and deflect cracks so failure is less sudden than in a monolithic ceramic. High-temperature aerospace components are an important application.

Why are some ceramics porous on purpose?

Porosity can create filtration, insulation, catalyst support, bone-ingrowth or fluid-distribution functions. Engineers therefore do not always seek maximum density; they seek the microstructure that serves the application.

Big picture: ceramics are controlled structure created by heat

The deepest idea is that a ceramic’s final behaviour is not determined by chemistry alone. The same basic oxide can behave differently when grain size, porosity, impurities, phase composition or surface finish change. Raw material becomes useful ceramic through a chain of decisions: particle preparation, shaping, drying, firing, cooling and finishing. Each stage leaves fingerprints in the microstructure.

Once that model is clear, many ceramic questions connect naturally. A cracked mug becomes a thermal-stress problem. A porous flowerpot becomes a pore-network problem. A translucent porcelain cup becomes a scattering and vitrification problem. A dental crown becomes a toughness, wear and biocompatibility problem. Ceramic science is the art of using chemistry and heat to create structure that ordinary materials cannot easily provide.

Useful routes for deeper learning

• Tell Me About Glass — compare crystalline ceramics with amorphous glass.
• Tell Me About Chemistry — strengthen the atomic-bonding and reaction model behind ceramic phases.
• Tell Me About Engineering — connect ceramic properties to design trade-offs.
• Tell Me About 3D Printing — see how ceramic pastes, powders and resins can be additively manufactured.
• The American Ceramic Society: What Are Ceramics? — external material on ceramic families, properties and uses.