1. Heat Resistance
Conventional ceramics, including bricks and tiles, are well known for their ability to withstand high temperatures. Alumina ceramics begins to melt or decompose at temperatures above 1,800oC, much higher than the melting point of metal materials.
2. Thermal Expansion
Low Thermal Expansion
When materials are heated, their size and volume increase in small increments, in a phenomenon known as thermal expansion. The coefficient ratio of thermal expansion indicates how much a material expands per 1℃ rise in temperature. Different material has different thermal expansion.Fine ceramics have low coefficients of thermal expansion — less than half those of stainless steels.
3. Thermal Conductivity
The property of heat transmitted through a material is called thermal conductivity.
Fine ceramics offer a wide range of thermal conductivity.
Among fine ceramics, some materials possess high levels of conductivity and transfer heat well, while others possess low levels of conductivity and transfer less heat.
Silicon carbide transfer heat particularly well while zirconia ceramics block heat effectively and the coefficient of thermal conductivity is low — about 1/10 that of stainless steel.
