| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7895468 | Corrosion Science | 2015 | 7 Pages |
Abstract
Ex-situ observation by laser microscopy was used to investigate the effect of plastic deformation induced by a micro-hardness tester on the corrosion resistance of both Ni-16Cr-15Mo-6Fe-0.5Si (NiCrMo) and Ni-30Co-16Cr-15Mo-6Fe-0.5Si (NiCoCrMo) alloys during immersion in hydrofluoric acid. This found that although the indentation in NiCrMo became slightly deeper and broader following immersion, this effect was far more pronounced with NiCoCrMo. Growth observed in the size of voids is attributed to preferential dissolution of SiO2 particles, as well as an accumulation of dislocations and other defects around them, with these defects also playing a key role in the subsequent coalescence of voids on the sample surface.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yuhang Hou, Yunping Li, Emi Onodera, Chen Zhang, Yuichiro Koizumi, Akihiko Chiba,