A member covered with a hard coating according to the present invention has a hard coating which has excellent erosion resistance, a hardness (H) of 20 GPa or more as measured using a nano indenter and a ratio of the hardness (H) to a Young's modulus (E) (i.e., H/E) of 0.06 or more, and comprises Ti
A member covered with a hard coating according to the present invention has a hard coating which has excellent erosion resistance, a hardness (H) of 20 GPa or more as measured using a nano indenter and a ratio of the hardness (H) to a Young's modulus (E) (i.e., H/E) of 0.06 or more, and comprises Ti and/or Cr, Al and N, wherein the total amount of Ti and Cr relative to the total amount of elements other than non-metal elements in the coating is 0.1 to 0.6 inclusive in terms of atomic ratio and the amount of Al relative to the total amount of the elements other than the non-metal elements in the coating is 0.4 to 0.7 inclusive in terms of atomic ratio.
대표청구항▼
1. A member covered with a hard coating, comprising: a substrate for any one selected from the group consisting of a steam turbine blade, a jet engine compressor blade, a compressor screw for gas or liquid compression, a turbo compressor impeller, and a fuel injection valve anda hard coating coverin
1. A member covered with a hard coating, comprising: a substrate for any one selected from the group consisting of a steam turbine blade, a jet engine compressor blade, a compressor screw for gas or liquid compression, a turbo compressor impeller, and a fuel injection valve anda hard coating covering the substrate,whereinthe hard coating has a hardness (H) of 20 GPa or more and a harness to Young's modulus ratio (H/E) of 0.06 or more, where the hardness and the Young's modulus are measured with a nano indenter, andthe hard coating has a composition of (TiaCrbAlcSidBeYf)(CxNy), where a, b, c, d, e, f, x, and y represent atomic ratios and 0≦a≦0.6,0≦b≦0.6,0.4≦c≦0.7,0≦d≦0.15,0≦e≦0.1,0≦f≦0.05,0.1≦a+b≦0.6,a+b+c+d+e+f=1,0
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이 특허에 인용된 특허 (8)
Gorokhovsky, Vladimir; Bekesch, Nicholas, Composite vapor deposited coatings and process therefor.
Yamamoto, Kenji; Satou, Toshiki; Morikawa, Yasuomi; Hanaguri, Koji; Takahara, Kazuki, Hard film for cutting tools, cutting tool coated with hard film, process for forming hard film, and target used to form hard film.
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