Osg Corporation

Tohoku University

Toshihiro Ohchi

Masatoshi Sakurai

Junichi Koike

Yuji Sutou

Mei Wang

Shoko Komiyama

A tool hard film that is to be disposed as coating on a surface of a tool, the tool hard film being a TiCrMoWV oxycarbide, oxynitride, or oxycarbonitride having a phase with a NaCl-type crystal structure as a main phase, the oxycarbide, oxynitride, or oxycarbonitride having fine crystals due to introduction of oxygen.

Hard film for machining tools and hard film-coated metal machining tool

A hard laminar coating having a first 61 m and a second film having respective different compositions and alternately laminated on a surface of a base structure, wherein the first film is a carbide, a nitride, a carboxide, a nitroxide, a carbonitride or a carbo-oxynitride of (AlCrB), while the second film is TiB, the hard laminar coating configured to include atomic ratios a, b and c in the first film satisfying a=1&#x2212;b&#x2212;c, 0.2&#x2266;b&#x2266;0.7, and 0&#x3c;c&#x2266;0.2, and a thickness of the first film being no less than 0.1 &#x3bc;m and no more than 5.0 &#x3bc;m, while a thickness of the second film being no less than 0.1 &#x3bc;m and no more than 5.0 &#x3bc;m, and to have a total thickness of no less than 0.2 &#x3bc;m and no more than 10.0 &#x3bc;m, and the hard laminar.

Hard laminar coating

Growing community of inventors

Toyokawa, Japan

Toshihiro Ohchi