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silicon nitride powder 
High hardness 
self-lubrication 
abrasion resistance 
refractory ,non-ferrous metal casting 
 

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 top hole clay . The top hole 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  The silicon nitride powder can be widely used in HRB400 hot rolled steel .The nitrogen of silicon nitride is a little lower than boron nitride ,so it has more advantages when used as nitrogen addtives for hot rolled steel –making .

 D  Silicon nitride powder has widely application in new ceramic and compounded materials to improve the corrosion resistance , wear resistance and bending strength .