| 热镀锌基板粗糙度对钝化膜耐蚀性的影响 |
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| 引用本文： | 苏衍战,李金,王炳如,车俊. 热镀锌基板粗糙度对钝化膜耐蚀性的影响[J]. 材料保护, 2017, 50(7) |
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| 作者姓名： | 苏衍战 李金 王炳如 车俊 |
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| 作者单位： | 1. 武钢有限公司冷轧厂,湖北武汉,430083;2. 武钢有限公司质检中心,湖北武汉,430083 |
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| 摘 要： | 为了研究热镀锌基板粗糙度对其表面环保钝化膜耐蚀性的影响,在不同表面粗糙度的基板上制备相同膜厚的钝化膜,采用中性盐雾试验方法,分析了不同粗糙度热镀锌基板的耐蚀性;采用扫描电镜观察了钝化膜表面的成分分布.结果显示:在试验条件下,随着粗糙度的增加,表面钝化膜的厚度均匀性逐渐降低,耐蚀性逐渐变差;对于家电用热镀锌板,建议基板粗糙度Ra控制在1.0μm以下.
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| 关 键 词： | 耐蚀性 粗糙度 钝化膜 热镀锌板 |
Influences of Roughness of Hot Galvanizing Plate on Corrosion Resistance of Passive Film |
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| SU Yan-zhan,LI Jin,WANG Bing-ru,CHE Jun. Influences of Roughness of Hot Galvanizing Plate on Corrosion Resistance of Passive Film[J]. Journal of Materials Protection, 2017, 50(7) |
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| Authors: | SU Yan-zhan LI Jin WANG Bing-ru CHE Jun |
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| Abstract: | In order to study influences of roughness of hot galvanizing plate on corrosion resistance of environmental protection passive film,the passive film with same thickness on sheet substrate with different surface roughness was manufactured.Moreover,the neutral salt spray experiment was adopted to study the corrosion resistance of the different passive films.Composition distribution of the samples was measured by scanning electron microscopy.Results showed that under the experimental conditions,with the increase of roughness values,the thickness uniformity of passive film gradually reduced and the corrosion resistance of passive film was worsened gradually.For hot galvanizing plate used in household appliance,surface roughness Ra should be controlled to be below 1.0 μm. |
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| Keywords: | corrosion resistance roughness passive films hot galvanizing plate |
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