C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 41/87 (2006.01) B05D 7/24 (2006.01) C04B 35/56 (2006.01) C04B 35/64 (2006.01) C22C 29/02 (2006.01) C22C 29/06 (2006.01) C23C 30/00 (2006.01)
Patent
CA 2092932
A coated cemented carbide member comprises a cemented carbide base material containing a binder metal of at least one iron family metal and a hard phase of a component selected from carbides etc. of metals belonging to groups IVB, VB and VIB of the periodic table, and a coating layer provided on the surface of the cemented carbide base material. The hard phase contains at least one metal component selected from carbides, nitrides, carbo-nitrides and carbonic nitrides of Zr and/or Hf and WC. A layer consisting of only WC and an iron family metal is provided on an outermost surface of each insert edge portion of the cemented carbide base material. The coating layer is a single or multiple layer consisting of at least one metal component selected from carbides etc. of metals belonging to groups IVB, VB and VIB of the periodic table. Due to this structure, it is possible to improve chipping resistance with no deterioration of wear resistance in the coated cemented carbide member for serving as a cutting tool.
Chudo Masuo
Kobayashi Mitsunori
Nomura Toshio
Uchino Katsuya
G. Ronald Bell & Associates
Sumitomo Electric Industries Ltd.
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