• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Corrosion Characteristics of Super Duplex Stainless Steel S32750 in LT-MED Environment
【24h】

Electrochemical Corrosion Characteristics of Super Duplex Stainless Steel S32750 in LT-MED Environment

机译：超级双相不锈钢S32750在LT-MED环境中的电化学腐蚀特性

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The electrochemical corrosion characteristics of super duplex stainless steel S32750 in LT-MEDenvironment was carried out to investigate the effect of seawater temperature and concentration on thecorrosion resistance and protective properties of the passive films using different electrochemicaltechniques. The results the pitting corrosion potential decreases, the passivity current density increases,induction period of pitting shortens and passivation index n decreases with the increase of temperatureand seawater concentration. Eb - Ep values and the area of hysteresis loop become larger with highertemperature and seawater concentration, indicating the pitting susceptibility of passive films increases.EIS reveals that impedance decreases with increasing seawater temperature and concentration, and theprotective ability is provided by the inner oxide layer, while the outer film is more defective. Mott- Schottky analysis shows that passive film present bilayer structure, and behaves as n-type and p-type,respectively. The donor and acceptor densities increase with seawater temperature and concentration,revealing passive films become more defective, resulting in decreasing of protective ability of thepassive films.
机译：通过在低温环境下对超级双相不锈钢S32750的电化学腐蚀特性进行了研究，以研究海水温度和浓度对采用不同电化学技术的钝化膜的耐蚀性和保护性能的影响。结果表明，随着温度和海水浓度的升高，点蚀电位降低，钝化电流密度增加，点蚀诱导期缩短，钝化指数n减小。 Eb-Ep值和滞后回线的面积随着温度的升高和海水浓度的增加而增大，表明钝化膜的点蚀敏感性增加.EIS表明阻抗随海水温度和浓度的升高而减小，并且保护能力由内部氧化层提供，而外膜的缺陷更多。 Mott-Schottky分析表明，无源薄膜具有双层结构，并分别表现为n型和p型。供体和受体的密度随海水温度和浓度的增加而增加，露出的钝化膜变得更加有缺陷，导致钝化膜的保护能力下降。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号