Silicon nitride powder , as a new technical material , can be widely used in many fields ,such as in ceramic , refractory ,non-ferrous metal ,iron casting , rubber industry and so on .

1, In non-ferrous metal casting industry ,silicon nitride powder can be widely used because of its excellent corrosion resistance and self-inflation .

2, In iron casting industry

 A The coating made by silicon nitride powder can solve the oxidation loss of the billet .

 

 B The tophole clay . The tophole clay with silicon nitride powder has been made without water . This kind of mass would cover the inside of top hole and protect it against the attack of iron and slag.

C  Used as nitrogen addtives for hot rolled steel –making .