Abrasion resistant articles based on silicon nitride

Details Abrasion resistant articles based on silicon nitride Abrasion resistant articles based on silicon nitride

C - Chemistry, Metallurgy

04

B

261/5

C04B 35/56 (2006.01) C04B 35/58 (2006.01) C04B 35/584 (2006.01) C04B 35/593 (2006.01)

Patent

CA 1155874

23042 ABRASION RESISTANT ARTICLES BASED ON SILICON NITRIDE ABSTRACT OF THE DISCLOSURE A composite article and cutting tool are prepared by densification to form a body consisting essentially of particles of hard refractory material uniformly distributed in a matrix consisting essentially of a first phase and a second phase, said first phase consisting essentially of crystalline silicon nitride and said second phase being an intergranular refractory phase comprising silicon nitride and a suitable densifi- cation aid comprising magnesium oxide and silicon dioxide.

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