KR101896857B1 - Zn-Al-Mg계 도금 강판 및 Zn-Al-Mg계 도금 강판의 제조 방법 - Google Patents
Zn-Al-Mg계 도금 강판 및 Zn-Al-Mg계 도금 강판의 제조 방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 Zn-Al-Mg계 도금 강판의 도금층을 표면으로부터 관찰한 SEM 사진을 나타내는 도면.
도 3은 본 발명의 Zn-Al-Mg계 도금 강판의 도금층 단면을 관찰한 SEM 사진을 나타내는 도면.
도 4는 비교예의 Zn-Al-Mg계 도금 강판의 도금층을 표면으로부터 관찰한 SEM 사진을 나타내는 도면.
도 5a는 본 발명의 Zn-Al-Mg계 도금 강판(실시예에서 제조한 도금 강판)의 도금층에 있어서의 X선 회절 스펙트럼의 강도를 나타내는 도면.
도 5b는 비교예의 Zn-Al-Mg계 도금 강판(실시예에서 제조한 도금 강판(10))의 도금층에 있어서의 X선 회절 스펙트럼의 강도를 나타내는 도면.
도 6은 비교예의 Zn-Al-Mg계 도금 강판의 도금층의 단면의 성분 원소 분포의 측정 결과를 나타내는 도면.
도 7은 본 발명의 Zn-Al-Mg계 도금 강판의 도금층 표면의 성분 원소 분포의 측정 결과를 나타내는 도면.
도 8은 비교예의 Zn-Al-Mg계 도금 강판의 도금층 표면의 성분 원소 분포의 측정 결과를 나타내는 도면.
도 9a는 셀룰러 덴드라이트상의 Al 초정의 형상을 나타내는 모식적인 사시도.
도 9b는 셀룰러 덴드라이트상의 Al 초정을 관찰한 사진(문헌 「B. Chalmers, Principles of Solidification(1964)」 T. Bower에 의한 사진, 165페이지)을 나타내는 도면.
Claims (5)
- Al을 4 내지 22질량%, Mg를 1.0 내지 6.5질량% 또한 질량%로 Al의 1/2 이하, Si를 0.001 내지 1.000질량% 및 잔부로서 Zn 및 불순물을 포함하는 도금층을 갖고,
상기 도금층의 조직은, 면적률이 30 내지 70%이고, 또한 제2축 간격이 0.5 내지 2.0㎛인 셀룰러 덴드라이트상의 제1 Al 초정과, 합계한 면적률이 30 내지 70%이며, 주축 길이가 5 내지 10㎛, 제2축 간격이 0.5 내지 2.0㎛인 미소 등축 덴드라이트상의 제2 Al 초정 및 주축 길이가 0.5 내지 3.0㎛인 페탈상의 제3 Al 초정을 포함하는 Al 초정을 갖고, 상기 Al 초정 이외의 조직이, Al과 Zn과 Mg2Zn11의 3원 공정 조직으로 구성되어 있는 Zn-Al-Mg계 도금 강판. - 제1항에 있어서, 상기 도금층이, 또한, Ti, Nb, Fe, Ni, Cr, Sn, Mn 및 B로부터 선택되는 1종 혹은 2종 이상을, 단독 또는 복합으로, 0.0001 내지 1.0000질량% 함유하는, Zn-Al-Mg계 도금 강판.
- 제1항 또는 제2항에 있어서, 상기 도금층의 조직이, Mg2Si를 포함하지 않는, Zn-Al-Mg계 도금 강판.
- Al을 4 내지 22질량%, Mg를 1.0 내지 6.5질량% 또한 질량%로 Al의 1/2 이하, Si를 0.001 내지 1.000질량% 및 잔부로서 Zn 및 불순물을 포함하는 용융 아연을, 강판의 적어도 편면에 도금하고,
상기 용융 아연을 도금한 강판을, Al 초정이 응고를 개시하는 온도 +30℃ 이상 520℃ 이하의 온도로 하여 그 온도로부터 370℃가 되는 온도까지를 500℃/초 이상의 냉각 속도이고, 또한 냉각 시의 총괄 전열 계수를 1000 내지 3000W/(㎡ㆍK)로 하여 냉각하는, Zn-Al-Mg계 도금 강판의 제조 방법. - 제4항에 있어서, 상기 냉각을, 수몰 냉각으로 행하는, Zn-Al-Mg계 도금 강판의 제조 방법.
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Application Number | Priority Date | Filing Date | Title |
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PCT/JP2015/061020 WO2016162982A1 (ja) | 2015-04-08 | 2015-04-08 | Zn-Al-Mg系めっき鋼板、及びZn-Al-Mg系めっき鋼板の製造方法 |
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US11618938B2 (en) * | 2017-07-05 | 2023-04-04 | Jfe Steel Corporation | Steel sheet having a hot-dip Zn—Al—Mg-based coating film excellent in terms of surface appearance and method of manufacturing the same |
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WO2019132412A1 (ko) | 2017-12-26 | 2019-07-04 | 주식회사 포스코 | 내식성 및 표면 평활성이 우수한 아연합금도금강재 및 그 제조방법 |
JP6950666B2 (ja) * | 2018-03-01 | 2021-10-13 | Jfeスチール株式会社 | 表面外観に優れた溶融Zn−Al−Mg系めっき鋼板の製造方法および溶融Zn−Al−Mg系めっき鋼板の製造ライン |
WO2019221193A1 (ja) * | 2018-05-16 | 2019-11-21 | 日本製鉄株式会社 | めっき鋼材 |
KR102276742B1 (ko) | 2018-11-28 | 2021-07-13 | 주식회사 포스코 | 도금 밀착성 및 내부식성이 우수한 아연도금강판 및 이의 제조방법 |
KR102178717B1 (ko) * | 2018-12-19 | 2020-11-27 | 주식회사 포스코 | 도금 밀착성 및 내식성이 우수한 Zn-Mg 합금 도금 강재 및 그 제조방법 |
JP7369773B2 (ja) | 2018-12-19 | 2023-10-26 | ポスコ カンパニー リミテッド | 耐食性及び表面品質に優れた亜鉛合金めっき鋼材とその製造方法 |
CN109536779B (zh) * | 2019-01-28 | 2020-11-06 | 东北大学 | 一种建筑用锌基合金板材及其制备方法 |
JP7120166B2 (ja) * | 2019-06-21 | 2022-08-17 | Jfeスチール株式会社 | 溶融Al-Zn系めっき鋼板の製造方法 |
WO2021060879A1 (ko) * | 2019-09-24 | 2021-04-01 | 주식회사 포스코 | 내식성, 내골링성, 가공성 및 표면 품질이 우수한 도금 강판 및 이의 제조방법 |
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JP7381864B2 (ja) * | 2019-11-29 | 2023-11-16 | 日本製鉄株式会社 | Zn-Al-Mg系溶融めっき鋼板 |
PH12022551080A1 (en) * | 2019-11-29 | 2023-09-18 | Nippon Steel Corp | Zn-Al-Mg-BASED HOT-DIP PLATED STEEL SHEET |
JP7381865B2 (ja) * | 2019-11-29 | 2023-11-16 | 日本製鉄株式会社 | Zn-Al-Mg系溶融めっき鋼板 |
KR102305748B1 (ko) * | 2019-12-18 | 2021-09-27 | 주식회사 포스코 | 내부식성이 우수한 용융 합금도금 강재 및 그 제조방법 |
JP7464849B2 (ja) * | 2020-10-21 | 2024-04-10 | 日本製鉄株式会社 | めっき鋼材、およびめっき鋼材の製造方法 |
WO2022107837A1 (ja) * | 2020-11-18 | 2022-05-27 | 日本製鉄株式会社 | めっき鋼材 |
CN116457483B (zh) | 2020-11-18 | 2024-04-19 | 日本制铁株式会社 | 镀敷钢材 |
CN112467064B (zh) * | 2020-11-18 | 2021-11-02 | 燕山大学 | 水系锌离子电池负极的制备方法、电池 |
CN114645157B (zh) * | 2022-03-11 | 2022-12-02 | 山东省科学院新材料研究所 | 一种可溶锌合金及其制备方法 |
CN115058676B (zh) * | 2022-06-02 | 2023-09-22 | 中国第一汽车股份有限公司 | 一种协同调控的复合锌基镀层钢板及其制备方法和热处理方法 |
CN115216668B (zh) * | 2022-07-13 | 2023-05-30 | 常州大学 | 一种消除ZAM锌铝镁镀锌合金中MgZn2和Mg2Zn11初生相的方法 |
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