Surface treated steel

TW202639894APending Publication Date: 2026-10-01NIPPON STEEL CORPORATION

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Patent Information

Application Number: TW115111940
Authority / Receiving Office: TW · TW
Patent Type: Applications
Current Assignee / Owner
Priority Date: 2025-03-28
Filing Date: 2026-03-26
Publication Date: 2026-10-01

Application Information

Patent Timeline

28 Mar 2025

Priority

26 Mar 2026

Application

TW115111940

01 Oct 2026

Publication

TW202639894A

IPC: C23C2/06; C23C2/40; C23C22/05; C23C22/36; C23C22/62; C23C22/68; C23C22/78; C23C22/83; C23C28/00

Inventors: 朴美映; 西田義勝

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Abstract

This invention provides a surface-treated steel with high corrosion resistance and minimal risk of blackening of the zinc-based plating. The surface-treated steel of this invention is formed by sequentially configuring steel, a Zn-containing plating layer, and a film. The film contains trivalent Cr, an organosilicon compound, and Co, wherein the concentration of trivalent Cr in the film is 0.30% by mass or more and 15.00% by mass or less.

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Patent Information

Abstract