Fine Ceramics(Advanced Ceramics)
Ceramic Properties
Ceramic Properties
Thermal Properties

Coefficient of Thermal Expansion

The ratio that a material expands in accordance with changes in temperature is called the coefficient of thermal expansion. Because Fine Ceramics possess low coefficients of thermal expansion, their distortion values, with respect to changes in temperature, are low. The coefficients of thermal expansion depend on the bond strength between the atoms that make up the materials. Covalent materials such as diamond, silicon carbide and silicon nitride have strong bonds between atoms, resulting in low coefficients of thermal expansion. In contrast, materials such as stainless steel possess weaker bonds between atoms, resulting in much higher coefficients of thermal expansion in comparison with Fine Ceramics.

Coefficient of Thermal Expansion
Coefficient of Thermal Expansion
(40 - 400℃)
× 10-6/K
Material Name & Code Features
Small
Large
<|0.05|(23℃)
1.5
(40 - 400℃)
This material has a very low coefficient of thermal expansion and has a small size change due to temperature change.
2.8 This material has excellent heat shock resistance and wear resistance, and has high strength even at high temperatures.
3.7 Lightweight, highly corrosion-resistant and excellent heat-resistant material.
4.6 It's a material with high thermal conductivity and electrical insulation.
7.2 It is a widely used material with high electrical insulation and mechanical strength.
7.2 This material has excellent corrosion resistance in a plasma environment.
7.6 It is a composite material of TiC or TiN and metal, and has excellent strength and wear resistance.
7.7
parallel to c-axis
It's a single crystal of alumina, a transparent material.
7.7 This material has excellent electrical and mechanical characteristics.
9.7 Smooth surface and excellent insulation at high temperature.
10.5 It is a material with high strength and fracture toughness.

Case studies utilizing this property