| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-layer hard film-coated tool having excellent crater abrasion resistance comprising a composite of hard film having excellent oxidation resistance, and a hard layer having lubricity, restricting chemical reaction with a material to be cut, and having excellent crater abrasion resistance to cope with dry-type and high-speed cutting work. SOLUTION: In this multi-layer hard film-coated tool coated with multi-layers of hard film on the surface of a substrate, more than one layer of each of TiAl hard film having excellent oxidation resistance and Ti hard film comprising fine boron nitride grains dispersed in the film, having high hardness and lubricity, restricting chemical reaction with a workpiece, and having excellent crater abrasion resistance are coated.
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