Title:
TITANIUM MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/244206
Kind Code:
A1
Abstract:
[Problem] To provide a titanium material having low-lightness and low-chroma appearance.
[Solution] A titanium material comprising titanium that serves as a substrate and a titanium oxide layer formed on the surface of the titanium and having a thickness of 60 to 300 nm as measured by glow discharge optical emission spectrometry, wherein the titanium oxide layer contains nitrogen in an amount of 0.5 to 7.0 at.%, the arithmetic average roughness Ra of the surface is 2.0 to 4.0 μm, and the power spectrum of the surface roughness has a peak having an amplitude height of 0.005 to 0.020 μm in a wavelength range from 1.1 to 2.5 μm and also has a peak having an amplitude height of 0.0010 to 0.0030 μm in a wavelength range from 0.80 to 0.98 μm. The L*a*b* color space may be as follows: L*: 30 to 40, a*: 2.0 to 9.0, and b*: -7.0 to 18.0.
Inventors:
KANEKO MICHIO (JP)
TOKUNO KIYONORI (JP)
WADA TAKAO (JP)
HASEGAWA MITSUYUKI (JP)
YAMAGISHI KAZUO (JP)
NAKAYAMA MITSURU (JP)
TOKUNO KIYONORI (JP)
WADA TAKAO (JP)
HASEGAWA MITSUYUKI (JP)
YAMAGISHI KAZUO (JP)
NAKAYAMA MITSURU (JP)
Application Number:
PCT/JP2018/023120
Publication Date:
December 26, 2019
Filing Date:
June 18, 2018
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C25D11/26
Domestic Patent References:
| WO2010140700A1 | 2010-12-09 |
Foreign References:
| JPH0849095A | 1996-02-20 | |||
| JP2015190039A | 2015-11-02 | |||
| JP2017222892A | 2017-12-21 |
Attorney, Agent or Firm:
KANEMOTO, Tetsuo et al. (JP)
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