| Influence of Oxide Morphologies on Galvanizability of Third Generation Automotive Steel |
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| 作者姓名： | She-ming JIANG Shi-jie FENG Xun-hua YUAN Yuan-peng LI Zhen-hua LI Qi-fu ZHANG |
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| 作者单位： | National Engineering Laboratory of Advanced Coating Technology for Metal Materials,Central Iron and Steel Research Institute;Faculty of Material Science and Engineering,Kunming University of Science and Technology |
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| 摘 要： | Focusing on improving the galvanizability of the third generation automotive steel, the effect of surface ox ide morphologies on the galvanizability was studied. The results show that the surface oxide types of sample steels by X ray photoelectron spectroscopy （XPS） analysis after annealing in different conditions are the same. Only MnO, MnO2 and Cr2O3 were detected and no complex oxide exists on the surface. Morphologies of surface oxides can greatly influence the galvanizability of the third generation automotive steel. Nodule-like oxide surface can contribute to better wettability and inhibition layer than vitreous film like oxide surface. Galvanized panels of nodule-like oxide surface steels only show pinhole sized bare spots, while panels galvanized from vitreous film-like oxide surface steels reveal larger areas of bare spots and uncoated areas. Inhibition layer observed in galvanized panels of nodule-like oxide surface steels is compact but not homogeneous; some inhibition layer grains are fine, and others are coarse, while the inhibition layer grains of panels galvanized from vitreous film-like oxide surface steels have a non-compact morphology with some particularly fine equiaxed crystals which developed deficiently.
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| 关 键 词： | 表面氧化物 汽车钢 第三代 形貌 X射线光电子能谱 Cr2O3 镀锌板 钢面板 |
| 收稿时间： | 6 September 2013 |
Influence of Oxide Morphologies on Galvanizability of Third Generation Automotive Steel |
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| She-ming JIANG,Shi-jie FENG,Xun-hua YUAN,Yuan-peng LI,Zhen-hua LI,Qi-fu ZHANG.Influence of Oxide Morphologies on Galvanizability of Third Generation Automotive Steel[J].Journal of Iron and Steel Research,2014,21(11):1059-1064. |
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| Authors: | She-ming JIANG Shi-jie FENG Xun-hua YUAN Yuan-peng LI Zhen-hua LI Qi-fu ZHANG |
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| Abstract: | Focusing on improving the galvanizability of the third generation automotive steel,the effect of surface oxide morphologies on the galvanizability was studied.The results show that the surface oxide types of sample steels by X-ray photoelectron spectroscopy(XPS)analysis after annealing in different conditions are the same.Only MnO,MnO2 and Cr2O3 were detected and no complex oxide exists on the surface.Morphologies of surface oxides can greatly influence the galvanizability of the third generation automotive steel.Nodule-like oxide surface can contribute to better wettability and inhibition layer than vitreous film-like oxide surface.Galvanized panels of nodule-like oxide surface steels only show pinhole-sized bare spots,while panels galvanized from vitreous film-like oxide surface steels reveal larger areas of bare spots and uncoated areas.Inhibition layer observed in galvanized panels of nodule-like oxide surface steels is compact but not homogeneous;some inhibition layer grains are fine,and others are coarse,while the inhibition layer grains of panels galvanized from vitreous film-like oxide surface steels have a non-compact morphology with some particularly fine equiaxed crystals which developed deficiently. |
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| Keywords: | galvanizing third generation automotive steel oxide morphology galvanizability |
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