The spontaneous passivation of multi principal element alloys II: The effect of Mn in the CoCrFeNiMn family
Source abstract
Abstract
The influence of at% Mn on the polarization and spontaneous passivation of (CoCrFeNi)100-xMnx (at%) alloys in aerated 0.1 M H₂SO₄ was investigated using atomic emission spectroelectrochemistry. At 0 – 6.5 at% Mn, spontaneous passivation occurred but at ≥ 10 at% Mn, the beneficial effect of Cr was completely negated. Spontaneous passivation could be predicted from Evans diagrams in which total current was decoupled into anodic dissolution and the cathodic components. Passivation occurred in two stages: rapid reaction with significant Cr enrichment; slower reaction with less enrichments. Differences between spontaneous and potentiodynamic passivation are discussed and interpreted with rate vs. free potential curves.
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Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
Show source-provided references
1. Controlling the corrosion resistance of multi-principal element alloys10.1016/j.scriptamat.2020.06.065 ↗
2. Research progress on the influence of alloying elements on the corrosion resistance of high-entropy alloys10.1016/j.jallcom.2024.175394 ↗
3. Microstructural development in equiatomic multicomponent alloys10.1016/j.msea.2003.10.257 ↗
4. Nanostructured high-entropy alloys with multiple principal elements: novel alloy design concepts and outcomes10.1002/adem.200300567 ↗
5. Roles of alloying elements in the corrosion resistance of equiatomic CoCrFeMnNi high-entropy alloy and application to corrosion-resistant alloy design10.2320/matertrans.MT-M2021136 ↗
6. Anodic polarization of passive and non-passive chromium–iron alloys10.1021/j150504a005 ↗
7. The passive state of stainless steels10.1016/0025-5416(80)90025-7 ↗
8. The anodic dissolution and passivation of NiCrFe alloys studied by ESCA10.1016/0010-938X(92)90113-H ↗
9. Spontaneous passivation of the CoCrFeMnNi high entropy alloy in sulfuric acid solution: the effects of alloyed nitrogen and dissolved oxygen10.1016/j.corsci.2021.110016 ↗
10. Study of the surface oxides and corrosion behaviour of an equiatomic CoCrFeMnNi high entropy alloy by XPS and ToF-SIMS10.1016/j.corsci.2020.108507 ↗
11. Effects of Mn on the electrochemical corrosion and passivation behavior of CoFeNiMnCr high-entropy alloy system in H2SO4 solution10.1016/j.jallcom.2019.152943 ↗
12. Bottom-up characterization of electrochemical passivity from simple binary alloys to high entropy alloys10.1016/j.electacta.2021.139804 ↗
13. Corrosion behavior of an equiatomic CoCrFeMnNi high-entropy alloy compared with 304 stainless steel in sulfuric acid solution10.1016/j.corsci.2018.02.031 ↗
14. The comparison of the corrosion behavior of the CrCoNi medium entropy alloy and CrMnFeCoNi high entropy alloy10.1016/j.apsusc.2022.154171 ↗
15. Microstructure and corrosion properties of CrMnFeCoNi high entropy alloy coating10.1016/j.apsusc.2016.11.176 ↗
16. Potential dependent Mn oxidation and its role in passivation of Ni38Fe20Cr22Mn10Co10 multi-principal element alloy using multi-element resolved atomic emission spectroelectrochemistry10.1149/1945-7111/ac0062 ↗
17. The influence of incorporation of Mn on the pitting corrosion performance of CrFeCoNi high entropy alloy at different temperatures10.1016/j.matdes.2019.108170 ↗
18. Localized corrosion behavior of non-equiatomic NiFeCrMnCo multi-principal element alloys10.1016/j.electacta.2020.136749 ↗
19. Effect of Mn content on the passivation and corrosion of Al0.3Cr0.5Fe2MnxMo0.15Ni1.5Ti0.3 compositionally complex face-centered cubic alloys10.5006/3906 ↗
20. Influence of sulfide inclusions on the pitting corrosion of steels10.5006/0010-9312-28.10.388 ↗
21. Initiation of pitting at sulfide inclusions in stainless steel10.1149/1.2401840 ↗
22. Effect of complex inclusions on pit initiation in 18% chromium-8% nickel stainless steel types 303, 304, and 32110.5006/1.3293599 ↗
23. Pitting and sulphide inclusions in steel10.1016/S0010-938X(74)80047-8 ↗
24. Role of manganese sulfide inclusions on pit initiation of super austenitic stainless steels10.5006/1.3277537 ↗
25. The influences of microstructure and nitrogen alloying on pitting corrosion of type 316L and 20 wt% Mn-substituted type 316L stainless steel10.1016/S0010-938X(00)00074-3 ↗
26. Effects of Mn on the localized corrosion behavior of Fe-18Cr alloys10.1016/j.electacta.2010.01.006 ↗
27. Pourbaix · 1974
28. Operando studies of Mn oxide based electrocatalysts for the oxygen evolution reaction10.1039/D3CP02384B ↗
29. On the passivity of manganese in acid solutions10.1149/1.2425853 ↗
30. Electrochemical metrics for corrosion resistant alloys10.1038/s41597-021-00840-y ↗
31. The spontaneous passivation of (CoFeNi)(1-x)/3Crx alloys in sulfuric acid10.1016/j.corsci.2024.112383 ↗
32. Atomic emission spectroelectrochemistry: real-time rate measurements of dissolution, corrosion, and passivation10.5006/3336 ↗
33. Potential-pH diagrams considering complex oxide solution phases for understanding aqueous corrosion of multi-principal element alloys10.1038/s41529-020-00141-6 ↗
34. Anodic Dissolution
35. The role of chromium content in aqueous passivation of a non-equiatomic Ni38Fe20CrxMn21-0.5xCo21-0.5x multi-principal element alloy (x = 22, 14, 10, 6 at%) in acidic chloride solution10.1016/j.actamat.2022.118607 ↗
36. Reliable electrochemical phase diagrams of magnetic transition metals and related compounds from high-throughput ab initio calculations10.1038/s41529-019-0088-z ↗
37. Surface segregation in Cr-Mn-Fe-Co-Ni high entropy alloys10.1016/j.apsusc.2020.147471 ↗