Invention Grant
- Patent Title: Al-based alloy plated steel material having excellent post-coating corrosion resistance
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Application No.: US14783316Application Date: 2014-04-17
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Publication No.: US10174413B2Publication Date: 2019-01-08
- Inventor: Shintaro Yamanaka , Jun Maki , Masao Kurosaki
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2013-097550 20130507
- International Application: PCT/JP2014/060910 WO 20140417
- International Announcement: WO2014/181653 WO 20141113
- Main IPC: B32B15/01
- IPC: B32B15/01 ; C23C10/30 ; C23C2/12 ; C22C21/00 ; C23C28/00 ; C23C2/28

Abstract:
An Al-based alloy plated steel material includes: a steel material and a coating layer formed on a surface of the steel material, wherein the coating layer includes an Al-based alloy plating layer containing, in mass %, not less than 10% nor more than 50% Fe and not less than 3% nor more than 15% Si, and formed on the surface of the steel material; a layer containing ZnO and formed above a surface of the Al alloy plating layer; and a ZnAl2O4 layer with a thickness of not less than 0.05 μm nor more than 2 μm, formed between the Al alloy plating layer and the layer containing ZnO.
Public/Granted literature
- US20160068942A1 Al-BASED ALLOY PLATED STEEL MATERIAL HAVING EXCELLENT POST-COATING CORROSION RESISTANCE Public/Granted day:2016-03-10
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