| 摘要 |
PROBLEM TO BE SOLVED: To produce a surface coated sintered alloy in which the peeling resistance of a hard film is improved to improve the life of a tool by removing a work deteriorated layer, particularly cracks as the work deteriorated layer caused by machining remaining on the surface of the base material of a sintered alloy of cement carbide or cermet and coating the base metal surface freed from the work deteriorated layer with a hard film and the process for producing the same. SOLUTION: This is a surface coated sintered alloy in which, in the base metal of a sintered alloy of cemented carbide or cermet contg. a hard phase and a bonding phase, at least a part of the surface of the base metal is machined, and the surface of the base metal is coated with a hard film having hardness higher than that of the base metal by one or >= two layers of lamination, and, into the particles of the hard phase on the surface side of the base metal coated with the hard film, cracks caused by the machining are put out of existence.
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