Patent ID: 8092560
Filing Date: 2012-01-10
Classification: B24B,B24D

Abstract:
1. A method of manufacturing a lapping tool used for lapping a substrate surface, the method comprising: forcing abrasive grains into a surface of the lapping tool with mechanical pressure to embed fixed abrasive grains into a base material of the lapping tool, the fixed abrasive grains having a height of cutting edges being projecting from a surface of the base material equal to or less than 40% of a size of the fixed abrasive grains; arranging the lapping tool in a vacuum chamber vessel; and then applying plasma processing to the surface of the lapping tool arranged in the vacuum chamber vessel, so as to increase a gripping force of an interface between the abrasive grains and the base material of the lapping tool wherein the abrasive grains embedded into the surface of the lapping tool comprise diamond fine grains having an average size of 10 to 100 nm.