| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7895244 | Corrosion Science | 2015 | 9 Pages |
Abstract
The effect of 2 wt.% Cu addition on the corrosion resistance of Ni-30Co-16Cr-15Mo-6Fe alloy in hydrofluoric acid was investigated by immersion testing at 100 °C. Microstructural observations of the passive film of samples after immersion testing via various methods revealed that the small addition of Cu yielded a tremendous improvement in corrosion resistance, even after cold forging. In addition, the passivation of Ni-30Co-16Cr-15Mo-6Fe alloy by a Mo-oxide-dominated passive film was completely changed to passivation by a Cu-dominated one in Ni-30Co-16Cr-15Mo-6Fe-2Cu alloy during immersion in hydrofluoric acid solution because the segregation behaviour of Cu was much stronger compared to that of Mo.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yunping Li, Xiandong Xu, Yuhang Hou, Chen Zhang, Fenglin Wang, Kazuyo Omura, Yuichiro Koizumi, Akihiko Chiba,