ELECTROCHEMICAL INVESTIGATIONS OF PITTING EVENTS AT DIFFERENT TEMPERATURES BY CURRENT TRANSIENTS ANALYSIS

机译：电流瞬态分析在不同温度下点蚀事件的电化学研究

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The analysis of current transients resulting from metastable pitting events is a useful method for the investigation of the mechanisms of localized corrosion. Statistical evaluation of the current transients data provides additional information about pitting corrosion events. In large scale electrochemical experiments, the noise of the passive current limits the detection of smaller metastable and pit initiation events. Improvements made in electrochemical data acquisition instrumentation and the appearance of novel methods of analysis, such as microelectrochemistry, now enables the analysis of the electrochemical current noise. The investigation of localized corrosion on stainless steels reveals that the current noise is influenced by numerous small pit initiation events due to the dissolution of non-metallic inclusions. This observation together with the statistical evaluation of the current transients help in clarifying mechanistic aspects, i.e. the effect of the temperature on pitting corrosion.

机译：由亚稳态点蚀事件引起的电流瞬变分析是研究局部腐蚀机理的有用方法。当前瞬态数据的统计评估提供了有关点蚀事件的更多信息。在大规模的电化学实验中，无源电流的噪声限制了对较小的亚稳态和坑引发事件的检测。电化学数据采集仪器的改进以及微电化学等新型分析方法的出现，现在可以分析电化学电流噪声。对不锈钢局部腐蚀的研究表明，由于非金属夹杂物的溶解，电流噪声受到许多小凹坑引发事件的影响。该观察结果以及对电流瞬变的统计评估有助于弄清机械方面，即温度对点蚀的影响。

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《International Symposium on Pits and Pores II: Formation, Properties, and Significance for Advanced Materials, Oct 22-27, 2000, Phoenix, AZ》|2000年|p.70-81|共12页
会议地点 Phoenix AZ(US);Phoenix AZ(US)
作者
S. Matsch; H. Boehni;
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作者单位

Swiss Federal Institute of Technology Institute of Materials Chemistry and Corrosion ETH -Hoenggerberg, CH-8093 Zuerich, Switzerland;

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会议组织
原文格式 PDF
正文语种 eng
中图分类无线电电子学、电信技术;
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ELECTROCHEMICAL INVESTIGATIONS OF PITTING EVENTS AT DIFFERENT TEMPERATURES BY CURRENT TRANSIENTS ANALYSIS

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