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A platform for research: civil engineering, architecture and urbanism
SURFACE-COATED CUBIC BORON NITRIDE SINTERED MATERIAL 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. The cBN substrate (sintered material) includes: a Ti compound, WC, AlN, TiB2, Al2O3, and cBN. The A layer has a composition of (Ti1-xAlx)N (0.4≤x≤0.7 in terms of atomic ratio). The B layer has a composition of (Cr1-y-zAlyMz)N (0.03≤y≤0.4 and 0≤z≤0.05 in terms of atomic ratio). A plastic deformation work ratio of the B layer is 0.35 to 0.50.
SURFACE-COATED CUBIC BORON NITRIDE SINTERED MATERIAL 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. The cBN substrate (sintered material) includes: a Ti compound, WC, AlN, TiB2, Al2O3, and cBN. The A layer has a composition of (Ti1-xAlx)N (0.4≤x≤0.7 in terms of atomic ratio). The B layer has a composition of (Cr1-y-zAlyMz)N (0.03≤y≤0.4 and 0≤z≤0.05 in terms of atomic ratio). A plastic deformation work ratio of the B layer is 0.35 to 0.50.
SURFACE-COATED CUBIC BORON NITRIDE SINTERED MATERIAL TOOL
MAEKAWA TAKUYA (author) / TAKAHASHI MASAKUNI (author) / SATO SHUN (author) / YUMOTO KENJI (author)
2019-01-17
Patent
Electronic Resource
English
SURFACE-COATED CUBIC BORON NITRIDE SINTERED MATERIAL TOOL
| European Patent Office | 2019
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