http://repository.iitr.ac.in/handle/123456789/24057| Title: | Room temperature oxide-film formation by oxygen dissolution induced surface directed spinodal decomposition in stainless steel |
| Authors: | Sasidhar K.N. Meka, Sai Ramudu |
| Published in: | Corrosion Science |
| Abstract: | A detailed thermodynamic assessment has for the first time shown that the rapid oxide film formation on stainless steels subjected to the natural air atmosphere at room temperature is actually facilitated by “oxygen dissolution induced surface directed spinodal decomposition” in the Fe-Cr-O solid solution. The proposed mechanism has led to a clear explanation of the following until now un-explained observations: i) complete compositional stratification involving a sub-surface segregation of Cr atoms within the oxide film on stainless steels; ii) necessity of a minimum of about 11 at.% Cr in stainless steels for rapid passivation characteristics. © 2020 Elsevier Ltd |
| Citation: | Corrosion Science, 166 |
| URI: | https://doi.org/10.1016/j.corsci.2020.108433 http://repository.iitr.ac.in/handle/123456789/24057 |
| Issue Date: | 2020 |
| Publisher: | Elsevier Ltd |
| Keywords: | Oxidation Passivity Spinodal decomposition Stainless steels |
| ISSN: | 0010938X |
| Author Scopus IDs: | 57194204113 24503463800 |
| Author Affiliations: | Sasidhar, K.N., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India Meka, S.R., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India, Department of Microstructure Physics and Alloy Design, Max Planck Institute for Iron Research, Dusseldorf, Germany |
| Funding Details: | We are grateful to Max Planck Society , Germany for financial support to the Max-Planck Partner Group of the Department of Microstructure Physics and Alloy Design, Max Planck Institute for Iron Research, Dusseldorf, Germany at Indian Institute of Technology Roorkee , Roorkee, India. and to the Ministry of Human Resource Development, Government of India , for financial support under PMRF. We are also grateful to Dr. Eric Jagle for going trhough the initial manuscript and providing his valuable suggestions. Appendix A Indian Institute of Technology Roorkee, IITR; Max-Planck-Gesellschaft, MPG; Ministry of Human Resource Development, MHRD |
| Corresponding Author: | Meka, S.R.; Department of Metallurgical and Materials Engineering, India; email: mekafmt@iitr.ac.in |
| Appears in Collections: | Journal Publications [MT] |
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