Title:
PLATED MEMBER AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/053668
Kind Code:
A1
Abstract:
This plated member has a plating film, which contains at least chromium, carbon and oxygen, while having chromium that is precipitated from a trivalent chromium bath as a main component, on the outer surface; the plating film contains 60 at% to 80 at% of chromium and 16.5 at% to 30 at% of carbon; the indentation hardness of the outer surface is 7 GPa or more; and the crystallinity, which is calculated from the peak integrated intensity ratio of the measurement values in the X-ray diffractometry and formula (1), is 4% or less. Formula (1): Crystallinity (peak integrated intensity ratio) = ((crystalline)/(crystalline + amorphous)) × 100%
Meanwhile, the indentation hardness is the measurement value of instrumented indentation hardness obtained by a nanoindentation method; and the integrated intensity ratio of formula (1) is a value obtained by XRD analysis wherein 2θ is 30° to 60°, the half width of crystalline is less than 3, and the half width of amorphous is 3 or more.
Inventors:
HOSHINO AKIHITO (JP)
OMATA YASUHISA (JP)
NAKANO HIROSHI (JP)
OMATA YASUHISA (JP)
NAKANO HIROSHI (JP)
Application Number:
PCT/JP2023/032511
Publication Date:
March 14, 2024
Filing Date:
September 06, 2023
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
C25D7/00; C25D3/06; F16J7/00
Domestic Patent References:
| WO2022044451A1 | 2022-03-03 |
Foreign References:
| JP2009532580A | 2009-09-10 | |||
| JP2018536094A | 2018-12-06 | |||
| CN101078132A | 2007-11-28 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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