pH值对高氮不锈钢在NaCl溶液中电化学行为的影响

Q4 Chemical Engineering

腐蚀科学与防护技术 Pub Date : 2014-04-23 DOI:10.11903/1002.6495.2013.331

Lixia Liu, Y. Qiao

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引用次数: 0

摘要

采用动电位极化曲线、电化学阻抗谱和电流-时间瞬变曲线研究了高氮不锈钢(HNS)在1 mol/L不同pH值NaCl溶液中的电化学行为。结果表明:HNS在碱性溶液中发生阳极钝化，腐蚀速率随pH值的增加而降低;在中性NaCl溶液中，由于溶蚀和再钝化的共同作用，HNS表面可能会形成多孔膜。在酸性和碱性NaCl溶液中，在HNS上形成的钝化膜表现出比在中性NaCl溶液中更好的保护作用。

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Effect of pH Value on Electrochemical Behavior of High Nitrogen Stainless Steel in NaCl Solution

The electrochemical behavior of high nitrogen stainless steel(HNS) in 1 mol/L NaCl solution with different pH values was investigated by means of potentiodynamic polarization curves, electrochemical impendence spectrum and current-time transient curves. The results show that anodic passivation of HNS could occur in alkaline solutions, while the corrosion rate of HNS decreased with the increasing pH value; a porous film might be grown on HNS in neutral NaCl solution due to the companying processes of dissolution and repassivation. In acidic and alkaline NaCl solutions, the formed passive films on HNS exhibit superior protectiveness rather than that in neutral NaCl solution.

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来源期刊

腐蚀科学与防护技术 Chemical Engineering-Chemical Engineering (all)

CiteScore

0.60

自引率

0.00%

发文量

2399

期刊介绍： Corrosion Science and Protection Technology is approved by the General Administration of Press and Publication of the State Council, the Chinese Academy of Sciences, the Chinese Academy of Sciences Institute of Metals organized by the domestic and international public circulation of national periodicals metal surface treatment academic journals. The journal is a professional and technical publication. It reports the scientific and technological achievements in the field of metal corrosion and protection, and publishes research reports, reviews, technical reports, research briefs, failure analysis, experience exchange, etc. The readers are engaged in the field of metal corrosion and protection. The target readers are scientific and technological personnel engaged in metal corrosion and protection and teachers and students of related professional colleges and universities. Corrosion Science and Protection Technology is indexed in CSCD, CSTPCD, CA,MA,SA and other authoritative databases.