...
首页> 外文期刊>Corrosion science >Scanning electrochemical microscopy for the investigation of localized degradation processes in coated metals: Effect of oxygen
【24h】

Scanning electrochemical microscopy for the investigation of localized degradation processes in coated metals: Effect of oxygen

机译:扫描电化学显微镜研究涂层金属中的局部降解过程:氧的影响

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

The effect of oxygen content on the corrosion reactions inside a holiday in a polymer-coated metal substrate was studied by SECM without adding a redox mediator. The system was mild steel coated by poly-urethane in KG. By selecting different values for the potential applied to the ultramicroelectrode tip, local concentrations of species involved in the degradation process are monitored, namely Fe(II) ions, hydrogen peroxide and oxygen. The results show a variation in both the shape and the magnitude of the scan lines measured over the holiday. A critical oxygen concentration was found below which the corrosion reaction is not observed.
机译:在不添加氧化还原介体的情况下,通过SECM研究了含氧量对聚合物涂覆的金属基材中空隙内部腐蚀反应的影响。该系统是在KG中涂有聚氨酯的低碳钢。通过为施加到超微电极头的电势选择不同的值,可以监测降解过程中涉及的物种的局部浓度,即Fe(II)离子,过氧化氢和氧气。结果显示,整个假期期间测得的扫描线的形状和大小均发生变化。发现临界氧浓度,低于该临界氧浓度未观察到腐蚀反应。

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