Hard film and hard film-coated tool
US7166155B2 · kind B2 · utility
41Cited by
5References
17Claims
0Family size
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Inventor
Key dates
| Filing date | Nov 18, 2003 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Aug 22, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hard film formed by an arc-discharge ion-plating method, having a composition comprising metal components represented by AlxCr1-x-ySiy, wherein x and y are respectively atomic ratios meeting 0.45≦x≦0.75, 0≦y≦0.35, and 0.5≦x+y<1, and non-metal components represented by N1-α-β-γBαCβOγ, wherein α,β and γ are respectively atomic ratios meeting 0≦α≦0.15, 0≦β≦0.35, and 0.003≦γ≦0.25, the hard film having an NaCl-type crystal structure, with a half width of 2θ at an X-ray diffraction peak corresponding to a (111) face or a (200) face being 0.5–2.0°, and the hard film containing oxygen more in grain boundaries than in crystal grains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.