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A platform for research: civil engineering, architecture and urbanism
SURFACE-COATED CUBIC BORON NITRIDE SINTERED TOOL
The present invention is directed to a surface-coated cubic boron nitride sintered material tool including a cBN substrate and a hard coating layer formed on a surface of the cBN substrate and having an alternate laminated structure of A layer and B layer. A peak of the grain size distribution of cBN grains in the cBN sintered material is present within a range of a grain size from 0.50 to 1.00 µm. The A layer has a composition of (Ti 1-x Al x )N(0.4¤x¤0.7 in an atomic ratio). The B layer has a composition of (Cr 1-y-z Al y M z )N (0.03¤y¤0.6 and 0¤z¤0.05 in an atomic ratio). An X-ray diffraction peak of a (200) plane is present at a position of a diffraction angle of 43.6 plus or minus 0.1 degrees, and a plastic deformation work ratio of the B layer is 0.35 to 0.50.
SURFACE-COATED CUBIC BORON NITRIDE SINTERED TOOL
The present invention is directed to a surface-coated cubic boron nitride sintered material tool including a cBN substrate and a hard coating layer formed on a surface of the cBN substrate and having an alternate laminated structure of A layer and B layer. A peak of the grain size distribution of cBN grains in the cBN sintered material is present within a range of a grain size from 0.50 to 1.00 µm. The A layer has a composition of (Ti 1-x Al x )N(0.4¤x¤0.7 in an atomic ratio). The B layer has a composition of (Cr 1-y-z Al y M z )N (0.03¤y¤0.6 and 0¤z¤0.05 in an atomic ratio). An X-ray diffraction peak of a (200) plane is present at a position of a diffraction angle of 43.6 plus or minus 0.1 degrees, and a plastic deformation work ratio of the B layer is 0.35 to 0.50.
SURFACE-COATED CUBIC BORON NITRIDE SINTERED TOOL
OBERFLÄCHENBESCHICHTETES KUBISCHES BORNITRID-SINTERWERKZEUG
OUTIL FRITTÉ EN NITRURE DE BORE CUBIQUE À SURFACE REVÊTUE
MAEKAWA TAKUYA (author) / TAKAHASHI MASAKUNI (author) / SATO SHUN (author) / YUMOTO KENJI (author)
2020-08-19
Patent
Electronic Resource
English
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