COATED AND PLATED STEEL SHEET OR COATED AND PLATED STEEL STRIP

WIPO Patent Application WO/2022/190173

A1

The present invention provides a coated and plated steel sheet or coated and plated steel strip comprising: a steel sheet or steel strip; a zinc-containing plating layer provided to one or both sides of the steel sheet or steel strip; a chemical conversion coating provided on the plating layer provided to one side of the steel sheet or steel strip, or on at least one of the plating layers provided to both sides of the steel sheet or steel strip; and a single layer or plurality of layers of a coating film provided on the chemical conversion coating. The single layer of coating film in contact with the chemical conversion coating, or the coating film from among the plurality of layers of coating film that is in contact with the chemical conversion coating, contains a concentration of 0.01-10.0% by mass relative to the solid content of the single layer of coating film in contact with the chemical conversion coating, or the coating film from among the plurality of layers of coating film that is in contact with the chemical conversion coating, of a cerium compound of which 0.10 g or more is able to dissolve in 100 g of water at room temperature.

FUJII TAKASHI (JP)
UEDA KOHEI (JP)

PCT/JP2021/009004

September 15, 2022

March 08, 2021

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NIPPON STEEL CORP (JP)

C23C28/00

JP2013067699A	2013-04-18
JP2009179859A	2009-08-13
JP2015057509A	2015-03-26
JP2016194134A	2016-11-17
JP2020066793A	2020-04-30
JP2002317279A	2002-10-31
JP2010214283A	2010-09-30
JP2005232505A	2005-09-02

TAIYO, NAKAJIMA & KATO (JP)

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