Features:
1) Thermal conductivity: High thermal conductivity about 7 times that
of alumina.
2) Coefficient of thermal expansion: Having coefficient of thermal
expansion similar to that of silicon, it realizes a high
reliability against installation of a large Si chip and heat
cycle.
3) Electrical characteristic: High electric insulation, and low
dielectric constant.
4) Mechanical characteristics: Mechanical strength higher than that
of alumina.
5) Corrosion resistance: Superior corrosion resistance against
molten metal.
6) Purity: Very small content of impurities, no toxicity, high