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Fine Ceramics, sometimes referred to as "advanced ceramics," are engineered materials that support the development of cutting-edge technology.

Heat (2)

Low Thermal Expansion

When materials are heated, their size and volume increase in small increments, in a phenomenon known as thermal expansion. Expansion values vary depending on the material being heated. The coefficient ratio of thermal expansion indicates how much a material expands per 1℃ (2.2℉) rise in temperature. Fine Ceramics (also known as "advanced ceramics") have low coefficients of thermal expansion — less than half those of stainless steels.

gif animation:Thermal expansion

Applications: Parts for high-precision measuring equipment.


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.

Coefficients of Thermal Expansion

figure:Coefficients of Thermal Expansion

For more information, please see Excerpt of Graph Values.

The term "Fine Ceramics" is interchangeable with "advanced ceramics," "technical ceramics" and "engineered ceramics." Use varies by region and industry.



Characteristics of Fine Ceramics



Characteristics of Fine Ceramics

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