| 快速划伤法研究裸露金属的点蚀热力学 |
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| 引用本文： | 陈红雨,过家驹.快速划伤法研究裸露金属的点蚀热力学[J].北京科技大学学报,1991,13(4):373-379. |
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| 作者姓名： | 陈红雨 过家驹 |
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| 作者单位： | 北京科技大学表面科学与腐蚀工程系
(陈红雨，过家驹)，北京科技大学表面科学与腐蚀工程系(张文奇) |
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| 摘 要： |
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| 关 键 词： | 快速划伤法 裸露金属 点蚀 不锈钢 |
Thermodynamics of Pitting Corrosion on the Bare Metal Surface by the Rapid Scratch Technique |
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| Chen Hongyu Guo Jiaju Zhang Wenqi.Thermodynamics of Pitting Corrosion on the Bare Metal Surface by the Rapid Scratch Technique[J].Journal of University of Science and Technology Beijing,1991,13(4):373-379. |
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| Authors: | Chen Hongyu Guo Jiaju Zhang Wenqi |
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| Institution: | Department of surface science and corrosions engineering |
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| Abstract: | The pitting corrosion of austenite stainless steels and alloy 800 in sodium chloride aqueours has been studied by the rapid scratch technique. The critical potential of the bare metal surface (Ec) obtained by the rapid scratch technique is an accurate potential value. The mechanism of pitting corrosion on the bare metal surface has been discussed and the physical sense of Ec has been proposed. Ec changes linearly with the logarithm of chlorion concentration. Ec is compared with breakdown potential (Eb) and protection (Ep) obtained by potentiodynamic technique. Ec and Eb change in the same way within a large pH range. In order to explain it, the coefficients of repassivation are measured. |
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| Keywords: | pitting repassivation stainless steel scratch method |
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