| Zn-Al-Mg 镀层的微观组织及相组成分析 |
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| 引用本文： | 蔡宁,黎敏,赵晓非,其其格,曹建平,杨建炜.Zn-Al-Mg 镀层的微观组织及相组成分析[J].中国冶金,2020,30(8):35-41. |
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| 作者姓名： | 蔡宁 黎敏 赵晓非 其其格 曹建平 杨建炜 |
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| 作者单位： | 1.首钢集团有限公司技术研究院, 北京 100043;
2.绿色可循环钢铁流程北京市重点实验室, 北京 100043 |
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| 摘 要： | Zn-Al-Mg镀层钢板具有优异的切口保护性能和耐大气腐蚀性能,但Zn-Al-Mg镀层的相组成至今尚存在争议。为了更好地控制Zn-Al-Mg镀层结构、镀层钢板的成形性和耐蚀性,利用SEM、XRD、GDS和TEM等设备分析了Zn-Al-Mg镀层钢板的微观组织,确定了Zn-Al-Mg镀层是由Zn、Al和MgZn2三相组成。通过TEM分析发现,Zn-Al-Mg镀层与钢板的界面存在厚度为0.01 μm的Al-Fe合金层和厚度为0.1 μm的Zn-Mg合金层。
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| 关 键 词： | Zn-Al-Mg合金 镀层 微观组织 相组成 |
Microstructure and phase analysis on Zn-Al-Mg alloy coatings |
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| CAI Ning,LI Min,ZHAO Xiao-fei,QI Qi-ge,CAO Jian-ping,YANG Jian-wei.Microstructure and phase analysis on Zn-Al-Mg alloy coatings[J].China Metallurgy,2020,30(8):35-41. |
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| Authors: | CAI Ning LI Min ZHAO Xiao-fei QI Qi-ge CAO Jian-ping YANG Jian-wei |
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| Affiliation: | 1. Research Institute of Technology, Shougang Group Co., Ltd., Beijing 100043, China;2. Beijing Key Laboratory of Green Recyclable Process for Iron and Steel Production Technology, Beijing 100043, China |
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| Abstract: | Zn-Al-Mg coated steels have excellent cut edge protection and atmospheric corrosion resistance, but the phase composition of Zn-Al-Mg coating is still controversial. In order to better control the coating structure, the formability and corrosion resistance of the coated steel sheet, the microstructure and phase structure of the Zn-Al-Mg coated steel sheet were analyzed in detail with scanning electron microscopy (SEM), X-ray diffraction (XRD), glow discharge spectrum(GDS) and transmission electron microscopy (TEM). It was determined that the Zn-Al-Mg coatings consisted of three phases such as Zn, Al and MgZn2. TEM analysis showed that there was an Al-Fe alloy layer with a thickness of 0.01 μm and a Zn-Mg alloy layer with a thickness of 0.1 μm at the interface between the coating and the steel plate. |
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| Keywords: | Zn-Al-Mg alloys coatings microstructures phase composition |
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