| 摘要 |
PROBLEM TO BE SOLVED: To provide a silicon nitride-based composite powder having good mechanical properties in the range from room temperature to a low-to-medium temperature, a low coefficient of friction and good abrasion resistance, and to provide a method for producing the same. SOLUTION: The silicon nitride-based composite powder is a secondary composite-particle powder comprising silicon nitride, a titanium-based compound, and a graphite and/or carbon, all having primary particles having an average particle diameter of 30 nm or less, wherein the surface of these particles are covered by a phase comprising at least titanium and/or silicon, and partly an amorphous phase of carbon. The method for producing the silicon nitride-based composite powder is characterized in mixing and grinding the silicon nitride powder, titanium metal powder, and graphite powder or carbon powder, at a temperature of from room temperature to 250 deg.C and at an acceleration of 10-300 G. |
