工程科学学报2011，Vol.33Issue(5)：563-569,7.
批量热浸Zn-0.05Al-0.2Sb合金镀层锌花表面分析
Surface analysis of spangles on batch hot-dipped Zn-0. 05Al-0. 2Sb alloy coatings
摘要
Abstract
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 βSb3Zn4 precipitates from the segregated Sb, and Al mainly exists as AI2O3 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.关键词
钢板/镀锌/表面形貌/偏析Key words
steel sheet/ galvanizing/ surface morphology/ segregation分类
矿业与冶金引用本文复制引用
卢锦堂,张伟伟,彭曙,车淳山..批量热浸Zn-0.05Al-0.2Sb合金镀层锌花表面分析[J].工程科学学报,2011,33(5):563-569,7.基金项目
国际铅锌研究组织资助项目(No.ILZRO/IZA/2009023) （No.ILZRO/IZA/2009023）
