POLISHING METHOD AND COMPOSITION FOR POLISHING

摘要

PROBLEM TO BE SOLVED: To provide a polishing method capable of efficiently making both compatible in smoothness and flatness for a high hardness material.SOLUTION: A method is provided for polishing a material having Vickers hardness of 1500 Hv or more. This polishing method includes a process of preliminarily polishing by using a preliminary polishing composition including an abrasive grain Aand a process of finishing-polishing by using a finishing polishing composition including an abrasive grain Alower in hardness than the abrasive grain A.SELECTED DRAWING: None