For example, in the application of surface sealing in the water-cooled pump of the automobile engine, the surface sealing mainly provides the sealing of the rotating interface to prevent the liquid or gas flow on the sealed side to the other side, which can avoid the leakage of water during the rotation of the pump.
SSiC mechaical seal ring has good chemical stability and can be applied to a variety of corrosive acid and alkaline media, so silicon carbide seal ring can be used for mechanical sealing of corrosive media. Corrosion wear is the main form that causes the failure of friction pair materials. Sintered silicon carbide generates a protective silicon dioxide film on the surface in an oxidizing atmosphere, which has good chemical stability and strong corrosion resistance even at 900℃.
Pressureless sintered silicon carbide not only has high hardness, wear resistance and thermal cracking resistance, but also its emergency operation characteristics are very superior, so the hard seal pair with silicon carbide itself has great application potential in granular media.
