SURFACE-COATED BORON NITRIDE SINTERED BODY TOOL
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Feb 11, 2016
app pub date -
Feb 26, 2014
filing date -
Mar 29, 2013
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Abstract
In a surface-coated boron nitride sintered body tool, at least a cutting edge portion contains a cubic boron nitride sintered body and a coating layer formed on a surface of the cubic boron nitride sintered body. A layer B of the coating layer is formed by alternately laminating one or more layers of each of two or more compound layers having different compositions. Each of the compound layers has a thickness not less than 0.5 nm and less than 30 nm.
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