Corrosion Behaviors of 316 Stainless Steel Weldment Studied by Array Reference Electrodes

Authors

Wang-huo YANG, Department of Chemistry, College of Chemistry and Chemical Engineering;
Rong-gang HU, Department of Chemistry, College of Chemistry and Chemical Engineering;
Chen-qing YE, Department of Chemistry, College of Chemistry and Chemical Engineering;
Wei HANG, School of Energy Research , Xiamen University, 361005 Xiamen, PR China
Ning LI, School of Energy Research , Xiamen University, 361005 Xiamen, PR China
Chang-jian LIN, School of Energy Research , Xiamen University, 361005 Xiamen, PR ChinaFollow

Corresponding Author

Wei HANG;Ning LI(lininghit@263.net);Chang-jian LIN(cjlin@xmu.edu.cn)

Abstract

The array reference electrodes were developed to in situ measure the potential distributions of the welded 316 stainless steel in 12% FeCl3 solution, combined with metallographic analysis, polarization curve, EIS measurement and Kelvin volta potential imaging. It was indicated that the weld zone of metal suffered a serious preferential corrosion when immersed in the environment due to the distinct changes of structure and composition during the welding process. With time prolonging, the corrosion potential of the welding zone was negatively shifted to a maximum value, and then declined gradually. At 45 min immersion, the corrosion development from welding zone to the basic substrate area was observed. The consistent results of the corrosion imagings were obtained by both array reference electrodes and scanning Kelvin imaging for the welded 316 stainless steel.

Graphical Abstract

Keywords

316 stainless steel, weld zone；corrosion, array reference electrodes

DOI Link

https://doi.org/10.61558/2993-074X.2857

Publication Date

2011-11-28

Online Available Date

2011-06-09

Revised Date

2011-05-09

Received Date

2011-04-27

Recommended Citation

Wang-huo YANG, Rong-gang HU, Chen-qing YE, Wei HANG, Ning LI, Chang-jian LIN. Corrosion Behaviors of 316 Stainless Steel Weldment Studied by Array Reference Electrodes[J]. Journal of Electrochemistry, 2011 , 17(4): Article 4.
DOI: 10.61558/2993-074X.2857
Available at: https://jelectrochem.xmu.edu.cn/journal/vol17/iss4/4