Räninitriid (silicon nitride) ja ränikarbiid (silicon carbide) on väga heade tugevusomaduste, ülisuure kõvaduse, keskmise sitkuse, hea soojusjuhtivuse, väikese soojuspaisumise ja suure termolöögikindlusega keraamilised materjalid.
Since the late 19th century silicon carbide has been an important material for sandpapers, grinding wheels, and cutting tools. More recently, it has found application in refractory linings and heating elements for industrial furnaces, in wear-resistant parts for pumps and rocket engines, and in semiconducting substrates for light-emitting diodes.
