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US 2018/0009039 A1Published application
Hard coating film
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorsKenji YAMAMOTO, Hiroaki NII
Life of this patent
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Abstract
A hard film formed on/above a substrate has a composition represented by the following formula (1): Cr1−aMga(BxCyN1−x−y) (1). In the formula (1), a is the atomic ratio of Mg, x is the atomic ratio of B, and y is the atomic ratio of C; and a, x, and y satisfy the following relationships: 0.05≦a≦0.30, 0≦x≦0.20, and 0≦y≦0.30.
Claims9
A hard film, having a composition represented by formula (1):
- Cr1−aMga(BxCyN1−x−y) (1)
- wherein a, x and y are atomic ratios of Mg, B and C, respectively, and satisfy
- 0.05≦a≦0.30,
- 0≦x≦0.20, and
- 0≦y≦0.30.
2 more elements
A hard film, having a composition represented by formula (2):
- Cr1−a−bMgaMb(BxCyN1−x−y) (2)
- wherein
- M is one or more elements selected from the group consisting of W, Mo, V, Zr, Hf and Nb, and
- a, b, x and y are atomic ratios of Mg, M, B and C, respectively, and satisfy
- 0.05≦a≦0.30,
- 0<b≦0.50,
- 0≦x≦0.20, and
- 0≦y≦0.30.
5 more elements
Dependencies are inferred from the claim text.