Invention Grant
- Patent Title: High-corrosion-resistance hot-dip galvanized steel sheet having excellent appearance uniformity and manufacturing method thereof
- Patent Title (中): 外观均匀性优异的高耐腐蚀性热浸镀锌钢板及其制造方法
-
Application No.: US14127780Application Date: 2012-06-29
-
Publication No.: US09481148B2Publication Date: 2016-11-01
- Inventor: Takeshi Yasui , Tooru Oohashi , Nayuta Kawazu , Satoru Tanaka , Akio Saito
- Applicant: Takeshi Yasui , Tooru Oohashi , Nayuta Kawazu , Satoru Tanaka , Akio Saito
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL AND SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL AND SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2011-146572 20110630
- International Application: PCT/JP2012/066655 WO 20120629
- International Announcement: WO2013/002358 WO 20130103
- Main IPC: B32B15/01
- IPC: B32B15/01 ; C23C2/00 ; C23C2/02 ; C23C2/06 ; C22C18/00 ; C22C18/04
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, Mg2Si phases and Ca phases each mainly composed of Ca or a Ca compound exist, and at least part of the Mg2Si phases precipitate by using the Ca phases as a nucleus.
Public/Granted literature
Information query
