| Fe-Cr合金的钝化膜和点蚀发展模型 |
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| 引用本文： | 李方,吴荫顺,杨德钧,张文奇.Fe-Cr合金的钝化膜和点蚀发展模型[J].北京科技大学学报,1986(1). |
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| 作者姓名： | 李方 吴荫顺 杨德钧 张文奇 |
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| 作者单位： | 北京钢铁学院金属腐蚀教研室
(李方，吴荫顺，杨德钧)，北京钢铁学院金属腐蚀教研室(张文奇) |
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| 摘 要： | 本文采用AFS和FPMA以及旋转圆盘—圆环电极等方法,对三种Fe-Cr合金在3.5％NaCl溶液中的钝化和点蚀行为进行了研究,考察了铬的作用和溶解机理,并据此提出了两种点蚀发展模型。
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| 关 键 词： | Fe-Cr合金 局部腐蚀 点蚀 钝化膜 |
The Possive Film and Pitting Propagation Models of Fe-Cr Alloy |
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| Li Fang Wu Yinshun Yang Dejun Zhang Wenqi.The Possive Film and Pitting Propagation Models of Fe-Cr Alloy[J].Journal of University of Science and Technology Beijing,1986(1). |
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| Authors: | Li Fang Wu Yinshun Yang Dejun Zhang Wenqi |
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| Institution: | Li Fang Wu Yinshun Yang Dejun Zhang Wenqi |
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| Abstract: | The passivity and pitting mechanisms of Fe-Cr alloys which contain 13%Cr, 17%Cr and 28%Cr in 3.5%NaCl solution have been presented by AES, EPMA technique and rotating disc-ring electrochemical measurement, especially, the behaviour of element Cr was investigated. By experiments and analysis, the following conclusions have been obtained: (a) The most important factor that control corrosion resistance of Fe-Cr alloys is the ratio Cr/Fe in passive film. (b) For diffenent Fe-Cr alloys, dissolution of Cr within pit is different. For alloys of Fe-13Cr and Fe-17Cr, dissolution of Cr follow dissolution-deposition reaction but following adsorption-desorption reaction is occurred for Fe-28Cr alloy.(c) Based on the experimental results and analytical discussion,models of pitting propagation mechanism for Fe-13Cr, Fe-17Cr alloys and for Fe-28Cr alloy have bene proposed respectively. |
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| Keywords: | Fe-Cr alloys localized corrosion pitting passive film |
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