Title:
SURFACE-TREATED STEEL SHEET AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/018723
Kind Code:
A1
Abstract:
The present invention provides a surface-treated steel sheet which can be produced without the use of hexavalent chromium, and which has excellent corrosion resistance in a BPA-free coated part. The present invention provides a surface-treated steel sheet which comprises a steel sheet and a chromium-containing layer that is arranged on at least one surface of the steel sheet, wherein if the chromium-containing layer is observed from the surface direction, there are linear regions in which an element having a lower atomic number than chromium is enriched, and the number of the linear regions is 5.0 per 100 nm or more.
Inventors:
UENO TAKASHI (JP)
TOMOZAWA MASANARI (JP)
NAKAGAWA YUSUKE (JP)
OTSUKA SHINJI (JP)
TOMOZAWA MASANARI (JP)
NAKAGAWA YUSUKE (JP)
OTSUKA SHINJI (JP)
Application Number:
PCT/JP2023/016772
Publication Date:
January 25, 2024
Filing Date:
April 27, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C25D11/38; C25D9/10
Foreign References:
| JP2021038429A | 2021-03-11 | |||
| JPH06340998A | 1994-12-13 | |||
| JPH06108265A | 1994-04-19 | |||
| JPH10130891A | 1998-05-19 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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