Enhanced passivity of Cr-Fe-Co-Ni-Mo multi-component single-phase face-centred cubic alloys: design, production and corrosion behaviour
| Main Authors: | Wang, Xueying, Mercier, Dimitri, Danard, Yolande, Rieger, Thomas, Perrière, Loïc, Laurent-Brocq, Mathilde, Guillot, Ivan, Maurice, Vincent, Marcus, Philippe |
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| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 2022
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6351503 |
Daftar Isi:
- 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.