| 摘要 |
PROBLEM TO BE SOLVED: To provide a superabrasive grain tool capable of lengthening a service life and also preventing degradation in quality of a ground material even if hard abrasive grains are fixed by an Ni-based bond layer by means of plating. SOLUTION: A surface of a bond layer 13 is covered with a protective layer 16 made of diamond-like carbon having higher hardness than that of the bond layer 13. COPYRIGHT: (C)2010,JPO&INPIT
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