SURFACE-TREATED STEEL SHEET AND METHOD FOR MANUFACTURING SURFACE-TREATED STEEL SHEET

WIPO Patent Application WO/2016/088750

A1

This surface-treated steel sheet has: a steel sheet or plated steel sheet substrate; and Zr complexes including tabular or acicular Zr(IV) oxide crystals and Zr(IV) phosphate coating the surfaces of the Zr(IV) oxide crystals with a coating thickness of 0.5 nm to 2.0 nm; the average length of line segments connecting one end of the Zr complexes adjacent to the substrate and the other end of the Zr complexes being 50 nm to 500 nm, the average angle formed by the surfaces of the Zr complexes and the substrate being 20° to 65°, and the projection area of the Zr complexes projected perpendicular to the surface of the substrate being at least 90% of the area of the surface of the substrate.

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DATE HIROMITSU (JP)

PCT/JP2015/083731

June 09, 2016

December 01, 2015

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NIPPON STEEL & SUMITOMO METAL CORP (JP)

C25D9/08; C25D9/10; C23C22/08; C23C28/00

JP2000309879A	2000-11-07
JP2009256726A	2009-11-05
JP2012062519A	2012-03-29
JP2012062577A	2012-03-29

SHIGA Masatake et al. (JP)
Masatake Shiga (JP)

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