The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2016
Filed:
Jun. 29, 2012
Takeshi Yasui, Tokyo, JP;
Tooru Oohashi, Tokyo, JP;
Nayuta Kawazu, Tokyo, JP;
Satoru Tanaka, Tokyo, JP;
Akio Saito, Tokyo, JP;
Takeshi Yasui, Tokyo, JP;
Tooru Oohashi, Tokyo, JP;
Nayuta Kawazu, Tokyo, JP;
Satoru Tanaka, Tokyo, JP;
Akio Saito, Tokyo, JP;
NIPPON STEEL AND SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
The present invention provides a high-corrosion-resistance hot-dip galvanized steel sheet having excellent appearance uniformity. The steel sheet includes: a coating layer containing Al: 4 to 22 mass %, Mg: 1 to 6 mass %, and Si: 0.001 to 1 mass %, and a balance being composed of Zn and inevitable impurities formed on a surface, in which at an interface between the coating layer and a base steel sheet, MgSi phases and Ca phases each mainly composed of Ca or a Ca compound exist, and at least part of the MgSi phases precipitate by using the Ca phases as a nucleus.