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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Temperature and Chloride Ion Concentration on Corrosion of Passive Films on Nano/Ultrafine Grained Stainless Steels
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Effect of Temperature and Chloride Ion Concentration on Corrosion of Passive Films on Nano/Ultrafine Grained Stainless Steels

机译：温度和氯离子浓度对纳米/超细晶粒不锈钢钝化膜腐蚀的影响

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摘要

The effects of solution temperature, concentration of chloride ions, and grain refinement on the corrosion resistance of the passive film formed on 304 stainless steels in borate buffer solution were investigated by electrochemical impedance spectroscopy and Mott-Schottky measurements. The results showed that the passive films formed on the surface of 304 stainless steels possessed n- and p-type semiconductor characteristics. With the increase of solution temperature, the corrosion resistance of the passive film of coarse and nano/ultrafine grained stainless steels decreased. However, the corrosion resistance of the passive film in nano/ultrafine grained stainless steel was higher than that in the coarse grained one. Moreover, in cyclic potentiodynamic polarization tests, chloride ions changed semiconductor characteristics of the passive film formed on the surface of stainless steel.
机译：通过电化学阻抗谱和Mott-Schottky测量研究了溶液温度，氯离子浓度和晶粒细化对304不锈钢在硼酸盐缓冲溶液中形成的钝化膜耐蚀性的影响。结果表明，在304不锈钢表面形成的钝化膜具有n型和p型半导体特性。随着溶液温度的升高，纳米和超细晶粒不锈钢的钝化膜的耐蚀性下降。但是，纳米/超细晶粒不锈钢中的钝化膜的耐蚀性比粗晶粒不锈钢中的高。而且，在循环电位极化测试中，氯离子改变了在不锈钢表面上形成的钝化膜的半导体特性。

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