Back to results
US 2025/0146116 A1Published application
Surface modifying method for galvanized steel sheet and surface modified galvanized steel sheet by thereof
AssigneePosco
InventorsYon-Kyun Song, Yun-Ha Yoo, Joong-Chul Park, Hyun-Ju Jeong, Jae-Dong Cho
Life of this patent
Estimating the term…
Abstract
A galvanized steel sheet according to one aspect of the present invention comprises: a base steel sheet; and a Zn—Al—Mg-based plating layer provided on at least one surface of the base steel sheet, wherein the Zn—Al—Mg-based plating layer may include a surface modified region enriched with cerium (Ce) on a surface layer side of the Zn—Al—Mg-based plating layer.
Claims4
A surface modifying method for a galvanized steel sheet, comprising:
- preparing a galvanized steel sheet having a Zn—Al—Mg-based plating layer formed on at least one surface of a base steel sheet;
- preparing a aqueous cerium nitrate solution;
- immersing the galvanized steel sheet in the aqueous cerium nitrate solution;
- and
- washing and drying the galvanized steel sheet immersed in the aqueous cerium nitrate solution.
2 more elements
Dependencies are inferred from the claim text.