CUBIC BORON NITRIDE POLYCRYSTAL, CUTTING TOOL, WEAR-RESISTANT TOOL, GRINDING TOOL, AND METHOD OF PRODUCING CUBIC BORON NITRIDE POLYCRYSTAL
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Jan 18, 2016
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Feb 9, 2015
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A cubic boron nitride polycrystal includes cubic boron nitride, the cubic boron nitride having an average grain size of not more than 150 nm, the cubic boron nitride polycrystal having a crack generation load of not less than 25 N in a breaking strength test in which an R200 μm diamond indenter is used to apply a load at a rate of 100 N/min.
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