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Enhanced passivity of Cr-Fe-Co-Ni-Mo multi-component single-phase face-centred cubic alloys: design, production and corrosion behaviour
- Source :
- Corrosion Science, Corrosion Science, 2022, 200, pp.110233. ⟨10.1016/j.corsci.2022.110233⟩, Corrosion Science, Elsevier, 2022, 200, pp.110233. ⟨10.1016/j.corsci.2022.110233⟩
- Publication Year :
- 2022
- Publisher :
- Zenodo, 2022.
-
Abstract
- The vast composition space of the Cr-Fe-Co-Ni-Mo system was explored by massive thermodynamic calculations in order to design and characterize multi-component single-phase fcc alloys optimized in Cr and Mo content and having enhanced passivity. Adding up to 15 at.% Mo while retaining the fcc single-phase is possible, which is unprecedented. Cr is confirmed to be a prerequisite to ensure self-protection against corrosion by passivation. Adding Mo up to 10 at.% tremendously enhances the resistance to passivity breakdown in Cl--containing aggressive environment. Newly designed quinary alloys, Cr25Fe25Co5Ni40Mo5 and Cr15Fe10Co5Ni60Mo10 (at.%), show superior resistance to localized corrosion.
- Subjects :
- General Chemical Engineering
microstructure
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
pitting corrosion
General Materials Science
passivity
General Chemistry
production
[CHIM.MATE]Chemical Sciences/Material chemistry
Multi-principal element alloys
thermodynamic diagrams
Subjects
Details
- Language :
- English
- ISSN :
- 0010938X
- Database :
- OpenAIRE
- Journal :
- Corrosion Science, Corrosion Science, 2022, 200, pp.110233. ⟨10.1016/j.corsci.2022.110233⟩, Corrosion Science, Elsevier, 2022, 200, pp.110233. ⟨10.1016/j.corsci.2022.110233⟩
- Accession number :
- edsair.doi.dedup.....664f0ccf9d2325a352a83ebf66f80112