Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels
For Fe-based 18Cr10Mn0.4N0.5C(0–2.17)Mo (in wt %) austenitic stainless steels, effects of Mo on pitting corrosion resistance and the improvement mechanism were investigated. Alloying Mo increased pitting and repassivation potentials and enhanced the passive film resistance by decreasing nu...
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| Format: | Article |
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MDPI AG
2018-08-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/8/653 |
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| author | Heon-Young Ha Tae-Ho Lee Jee-Hwan Bae Dong Won Chun |
| author_facet | Heon-Young Ha Tae-Ho Lee Jee-Hwan Bae Dong Won Chun |
| author_sort | Heon-Young Ha |
| collection | DOAJ |
| description | For Fe-based 18Cr10Mn0.4N0.5C(0–2.17)Mo (in wt %) austenitic stainless steels, effects of Mo on pitting corrosion resistance and the improvement mechanism were investigated. Alloying Mo increased pitting and repassivation potentials and enhanced the passive film resistance by decreasing number of point defects in the film. In addition, Mo reduced critical dissolution rate of the alloys in acidified chloride solutions, and the alloy with higher Mo content could remain in the passive state in stronger acid. Thus, it was concluded that the alloying Mo enhanced pitting corrosion resistance of the alloys through increasing protectiveness of passive film and lowering pit growth rate. |
| first_indexed | 2024-04-13T05:20:55Z |
| format | Article |
| id | doaj.art-38134133a47949919506252f730687b6 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-04-13T05:20:55Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-38134133a47949919506252f730687b62022-12-22T03:00:44ZengMDPI AGMetals2075-47012018-08-018865310.3390/met8080653met8080653Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless SteelsHeon-Young Ha0Tae-Ho Lee1Jee-Hwan Bae2Dong Won Chun3Steel Department, Korea Institute of Materials Science, 797 Changwondae-ro, Seongsan-gu, Changwon, Gyeongnam 51508, KoreaSteel Department, Korea Institute of Materials Science, 797 Changwondae-ro, Seongsan-gu, Changwon, Gyeongnam 51508, KoreaAdvanced Analysis Center, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, KoreaAdvanced Analysis Center, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, KoreaFor Fe-based 18Cr10Mn0.4N0.5C(0–2.17)Mo (in wt %) austenitic stainless steels, effects of Mo on pitting corrosion resistance and the improvement mechanism were investigated. Alloying Mo increased pitting and repassivation potentials and enhanced the passive film resistance by decreasing number of point defects in the film. In addition, Mo reduced critical dissolution rate of the alloys in acidified chloride solutions, and the alloy with higher Mo content could remain in the passive state in stronger acid. Thus, it was concluded that the alloying Mo enhanced pitting corrosion resistance of the alloys through increasing protectiveness of passive film and lowering pit growth rate.http://www.mdpi.com/2075-4701/8/8/653high interstitial alloymolybdenumpitting corrosionpassive film |
| spellingShingle | Heon-Young Ha Tae-Ho Lee Jee-Hwan Bae Dong Won Chun Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels Metals high interstitial alloy molybdenum pitting corrosion passive film |
| title | Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels |
| title_full | Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels |
| title_fullStr | Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels |
| title_full_unstemmed | Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels |
| title_short | Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels |
| title_sort | molybdenum effects on pitting corrosion resistance of fecrmnmonc austenitic stainless steels |
| topic | high interstitial alloy molybdenum pitting corrosion passive film |
| url | http://www.mdpi.com/2075-4701/8/8/653 |
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