| 摘要 |
PURPOSE:To obtain an abrasive grain with a prolonged service life by providing a coating layer of a carbide (or a carbonitride) or a nitride of Ti on the surface of a diamond abrasive grain, thereby improving the adhesion to a matrix. CONSTITUTION:On the surface of a diamond abrasive grain 1 with a particle size of 30-60 mesh is formed a coating layer 3 having a thickness of 1-10mum and consisting of a carbide (or a carbonitride) or a nitride of Ti presented by the following formula: TiC1-xNx (0<=x<=1) by the PVD method, the CVD method, the mechanofusion method or the like. This abrasive grain is then sintered to a metal matrix 2. |
