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中文摘要：
用扫描电子显微镜（SEM）、原子力显微镜（AFM）、能谱分析仪（EDS）、X射线衍射仪（XRD）和X射线光电子能谱（XPS）研究了批量热浸Zn-0.05Al-0.2Sb合金镀层上锌花的表面形貌和偏析.结果表明：按宏观形貌存在三类锌花,即亮锌花、羽毛状锌花和暗锌花,其表面粗糙度和合金元素Al、Sb的表面偏析均依次增大,电化学阻抗谱（EIS）分析表明其耐蚀性也依次降低;表面偏析的Sb形成析出相β-Sb_3Zn_4针状粒子,Al主要以Al_2O_3存在于锌层表面的氧化膜中.利用锌花生长模型和Zn-Sb相图讨论了上述现象产生的原因.
英文摘要：
The surface morphology and segregation of spangles on a batch hot-dipped Zn-0.05Al-0.2Sb alloy coating were investigated by scanning electron microscopy （SEM）, atomic force microscopy （AFM）, energy dispersive spectroscopy （EDS）, X-ray diffraction analysis （XRD） and X-ray photoelectron spectroscopy （XPS）. It is found that the coating surface usually exhibits three kinds of spangles： shiny, feathery and dull spangle, with the surface roughness and segregation of Al and Sb increasing in turn. Electrochemical impedance spectroscopy （EIS） tests show that their corrosion-resistances decrease in turn. On the coating surface, acicular β-Sb_3Zn_4 precipitates from the segregated Sb, and Al mainly exists as Al_2O_3 in the oxide film of the Zn coating. The above phenomena were discussed by a crystal growth model of spangles and the Zn-Sb phase diagram.
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