Main USES of si3N4 powder: according to the application requirements of different fields, a series of different grades of si3N4 powder products have been developed, which are widely used in high-tech structural ceramics, various wear-resisting materials, refractories and other fields.High purity, small particle size, uniform distribution, large specific surface area, high surface activity, low packing density;The uv reflectance is above 95% and the absorption rate of infrared band is above 97%, with good chemical corrosion resistance, strong lubrication performance, high hardness and small sliding friction coefficient.