Title:
SURFACE-TREATED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2023/190971
Kind Code:
A1
Abstract:
Disclosed is a surface-treated steel sheet that has excellent weldability and corrosion-resistance. A surface-treated steel sheet of the present disclose is characterized by comprising a steel sheet having a Zn-containing plated layer, and a surface-treated layer which is provided on at least one major surface of the steel sheet, wherein: the surface-treated layer has at least a coating film as an outer layer, the coating film having an average film thickness of 1.0-10.0 μm; the coating film includes a binder resin, an oil-absorbing agent, and a conductive agent, the binder resin including an epoxy resin; the percentage of the epoxy resin in the binder resin is more than or equal to 25% by volume; the oil-absorbing agent has an oil absorption amount of more than or equal to 50 ml/100 g; the oil-absorbing agent has a particle diameter more than or equal to one-half and less than or equal to the average film thickness; and the coating film includes more than or equal to 5% by volume of the oil-absorbing agent.
Inventors:
KAWAMURA YASUAKI (JP)
FUJII TAKASHI (JP)
TOSHIN KUNIHIKO (JP)
UEDA KOHEI (JP)
UEDA DAICHI (JP)
FUJII TAKASHI (JP)
TOSHIN KUNIHIKO (JP)
UEDA KOHEI (JP)
UEDA DAICHI (JP)
Application Number:
PCT/JP2023/013368
Publication Date:
October 05, 2023
Filing Date:
March 30, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23C28/00; B32B15/092
Domestic Patent References:
| WO2018092244A1 | 2018-05-24 |
Foreign References:
| JP2004107654A | 2004-04-08 | |||
| JP2017122186A | 2017-07-13 | |||
| JP2006219731A | 2006-08-24 | |||
| JP2004183080A | 2004-07-02 | |||
| JP2010514886A | 2010-05-06 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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