| 摘要 |
PROBLEM TO BE SOLVED: To provide a grindstone having long lifetime, which comprises, between abrasive grains, a member for adjusting intervals between the abrasive grains, and a manufacturing method for the same.SOLUTION: A grindstone 10 comprises: a plurality of super-abrasive grains 12 (abrasive grains) which are arranged so as not to contact each other; a vitrified bond 14 (a bonding agent) which is formed in a bridge shape to bridge the plurality of super-abrasive grains 12 (abrasive grains) with each other and bonds the plurality of super-abrasive grains 12 (the abrasive grains) with each other; a plurality of fine particles 16 which are arranged in an assembly state in the vitrified bond 14 and interposed between the plurality of super-abrasive grains 12 so as to arrange the plurality of super-abrasive grains 12 in a non-contact manner; and gas cavities 18 which are formed around the vitrified bond 14.SELECTED DRAWING: Figure 2 |
