CVD silicon carbide (SiC) coatings have lots of advantages, including ultra-high purity surfaces and extremely high wear resistance. The CVD process can provide SiC coating with extremely high purity and theoretical density without pores. Moreover, since silicon carbide is very hard, it can be polished to a mirror-like surface. Because the coating

Pressureless-sintered silicon carbide saggars has the characteristics of high temperature resistance, good thermal shock stability, small expansion coefficient, resistance to corrosion of various strong acids and alkali, good spalling resistance, good resistance to pulverization, and good high-temperature creep property.

The hardness of silicon carbide ceramics is second only to diamond and cubic boron nitride. Its extremely high hardness enables it to have a very low abrasion, which can prevent material contamination. So it is suitable for various grinding and dispersing occasions.