Classification Of Alumina Ceramic Substrate

- Mar 13, 2019-

Alumina ceramics are classified by the purity of alumina. Alumina purity of> 99% is called corundum porcelain, and alumina purity of 99%, 95%, and 90% is called 99 porcelain, 95 porcelain, and 90 porcelain. The content is> 85% alumina ceramics are commonly referred to as high alumina ceramics. The bulk density of 99.5% alumina ceramics is 3.95g / cm3, the bending strength is 395MPa, the linear expansion coefficient is 8.1 × 10-6, the thermal conductivity is 32W / (m · K), and the insulation strength is 18KV / mm.