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Numerical Approach for Atmospheric Corrosion Monitoring Based on EIS of a Weathering Steel
  • ISSN号:1006-7191
  • 期刊名称:《金属学报:英文版》
  • 时间:0
  • 分类:TG142.7[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学] TE986[石油与天然气工程—石油机械设备]
  • 作者机构:[1]State Key Laboratory for Corrosion and Protection,Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China
  • 相关基金:This work was financially supported by the National Natural Science Foundation of China (Nos. 51201170, 51131007 and 50971120), Royal Thai Government Scholarship for financial support for Ch. Thee, National Basic Research Program of China (No. 2014CB643300), National Material Environmental Cor- rosion platform, and the Start-up Fund Program for Ph.D. Holders of Liaoning Province (No. 20131123).
中文摘要:

电气化学的阻抗光谱学(EIS ) 和电影厚度测量被采用了学习在模仿的 coastalindustrial 气氛被薄电解质层盖住的捱过的钢的大气的腐蚀。结果显示腐蚀率是盖住的电解质厚度和湿 / 干燥的周期的功能。在每个湿/干燥的周期以内,增加的腐蚀率与增加的 Cl 有关<啜class=“ a-plus-plus ”>并且那么<潜水艇class=“ a-plus-plus ”> 4 <啜class=“ a-plus-plus ”> 2 集中和氧散开的改进与电解质的蒸发评价。另外,当湿 / 干燥的周期继续,腐蚀率在起始的腐蚀阶段然后减少期间增加。而且,一条数学途径基于数字集成,从 EIS 的大小获得钢的腐蚀团损失的方法被开发了,并且这将为室内的模仿的大气的腐蚀测试的发展是有用的。

英文摘要:

Electrochemical impedance spectroscopy (EIS) and film thickness measurement have been employed to study the atmospheric corrosion of a weathering steel covered with a thin electrolyte layer in a simulated coastal-industrial atmosphere. The results indicate that the corrosion rate is a function of the covered electrolyte thickness and the wet/dry cycle. Within each wet/dry cycle, the increased corrosion rate is related to the increased Cl^- and SO4^2- concentration and an enhancement of oxygen diffusion rate with the evaporation of the electrolyte. In addition, the corrosion rate increases during the initial corrosion stage and then decreases as the wet/dry cycle proceeds. Moreover, one mathematical approach based on the numerical integration method to obtain corrosion mass loss of steel from the measurements of EIS has been developed, and this would be useful for the development of indoor simulated atmospheric corrosion tests.

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期刊信息
  • 《金属学报:英文版》
  • 中国科技核心期刊
  • 主管单位:中国科协
  • 主办单位:中国金属学会
  • 主编:
  • 地址:沈阳文华路72号
  • 邮编:110016
  • 邮箱:jsxb@imr.ac.cn
  • 电话:024-23971286
  • 国际标准刊号:ISSN:1006-7191
  • 国内统一刊号:ISSN:21-1361/TG
  • 邮发代号:
  • 获奖情况:
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  • 被引量:286