| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7893545 | Corrosion Science | 2018 | 28 Pages |
Abstract
This paper focuses on the study of micro-galvanic corrosion of the Cu/Ru couple in KIO4 solution. Practical nobility across the Cu/Ru interface was evaluated by Volta potential mapping, and the morphological changes were monitored by in-situ atomic force microscopy measurements during exposure in a KIO4 solution. Chemical composition of precipitated corrosion product was analyzed by Confocal Raman spectroscopy immediately after the exposure. The results show that Cu is the anode of the Cu/Ru couple, and accelerated dissolution of Cu preferentially occurs near the Cu/Ru interface. However, subsequent formation of insoluble Cu(IO3)2·nH2O leads to precipitation, which impedes further Cu corrosion.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jie Cheng, Jinshan Pan, Tongqing Wang, Xinchun Lu,