热浸镀Zn11Al3Mg0.2Si合金镀层微观组织实验研究

表面技术 , 2011, 40(3): 32-35. doi: 10.3969/j.issn.1001-3660.2011.03.010

热浸镀Zn11Al3Mg0.2Si合金镀层微观组织实验研究

李锋 ^1, , 吕家舜 ^2, , 杨洪刚 ^3, , 康永林 ^4,

1.鞍钢股份技术中心,鞍山114009

2.鞍钢股份技术中心,鞍山114009;北京科技大学材料科学与工程学院,北京100083

3.鞍钢股份技术中心,鞍山114009

4.北京科技大学材料科学与工程学院,北京100083

关键词：热浸镀 , Zn11Al3Mg0.2Si合金镀层 , GD-OES , EPMA , 镀层微观组织

The Experiment Research of Microstructure of Hot-dip Galvanized Zn11Al3Mg0.2Si Alloy Coating

主要研究了热浸镀Zn11Al3Mg0.2Si合金镀层的微观结构及组织特征,利用扫描电镜SEM及其能谱附件EDX观察分析了锌铝镁镀层表面以及截面的微观结构、合金层的形貌、镀层中各相的成分组成,利用辉光放电发射光谱仪GD-OES分析了镀层中各元素沿深度方向的分布,利用电子探针EPMA分析了镀层中各元素的分布,利用X-射线衍射仪分析了镀层的相组成.结果表明:镀层中各元素沿镀层的深度方向呈现不均匀分布,Mg元素在镀层表面严重富集,镀层组织呈现多相混合结构,以MgZn2和Zn共晶为主,同时存在块状锌以及一层较薄的合金层.

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热浸镀Zn11Al3Mg0.2Si合金镀层微观组织实验研究

The Experiment Research of Microstructure of Hot-dip Galvanized Zn11Al3Mg0.2Si Alloy Coating

参考文献