发明授权
- 专利标题: High-manganese hot-dip aluminum-coated steel sheet having excellent coating adhesion
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申请号: US16064735申请日: 2016-12-23
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公开(公告)号: US10968506B2公开(公告)日: 2021-04-06
- 发明人: Heung-Yun Kim , Hyeon-Seok Hwang , Young-Ha Kim
- 申请人: POSCO
- 申请人地址: KR Pohang-si
- 专利权人: POSCO
- 当前专利权人: POSCO
- 当前专利权人地址: KR Pohang-si
- 代理机构: Cantor Colburn LLP
- 优先权: KR10-2015-0186145 20151224
- 国际申请: PCT/KR2016/015171 WO 20161223
- 国际公布: WO2017/111533 WO 20170629
- 主分类号: C23C2/12
- IPC分类号: C23C2/12 ; C23C2/40 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/00 ; C22C38/38 ; C23C2/28 ; C22C38/14 ; C22C38/12 ; B32B15/01 ; C22C38/22 ; C22C38/24 ; C22C38/26 ; C22C38/28 ; C22C38/32
摘要:
Provided is a high-manganese hot-dip aluminum-coated steel sheet comprising: a base steel sheet containing, by weight, 5% to 35% of Mn, 0.3 to 6% of Al, 0.1 to 1.2% of Si, the balanced amount of Fe, and inevitable impurities; a hot-dip aluminum-coated layer, formed on a surface of the base steel sheet, containing, by weight, 3 to 12% of Si and the balanced amount of Al, and inevitable impurities; and an alloy layer, 0.1 to 10 μm in thickness with a Fe—Al—Si—Mn-based alloy phase on an interface between the base steel sheet and the hot-dip aluminum-coated layer, containing, by weight, 40 to 70% of Al, 2 to 13% of Si, 3 to 9% of Mn, the balance amount of Fe, and inevitable impurities.