Tribocorrosion Behavior of a Medium-Entropy Austenitic Stainless Steel in 3.5 wt.% NaCl: A Comparative Study with 304 and S31254 Stainless Steels
This study investigates the tribocorrosion behavior of 304 stainless steel (304SS), S31254 super austenitic stainless steel (S31254 SASS), and a medium-entropy austenitic stainless steel (MEASS) in 3.5 wt.% NaCl solution under sliding conditions. The objective is to clarify the performance differenc...
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MDPI AG
2025-06-01
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| Online Access: | https://www.mdpi.com/2075-4442/13/6/260 |
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| author | Chun-Hao Wang Shih-Yen Huang Yu-Ren Chu Peng-Shu Hsu Hung-Wei Yen I-Chung Cheng Peng-Wei Chu Yueh-Lien Lee |
| author_facet | Chun-Hao Wang Shih-Yen Huang Yu-Ren Chu Peng-Shu Hsu Hung-Wei Yen I-Chung Cheng Peng-Wei Chu Yueh-Lien Lee |
| author_sort | Chun-Hao Wang |
| collection | DOAJ |
| description | This study investigates the tribocorrosion behavior of 304 stainless steel (304SS), S31254 super austenitic stainless steel (S31254 SASS), and a medium-entropy austenitic stainless steel (MEASS) in 3.5 wt.% NaCl solution under sliding conditions. The objective is to clarify the performance differences among these alloys when exposed to simultaneous mechanical wear and corrosion. Electrochemical techniques, including potentiodynamic polarization and potentiostatic sliding tests, were used to evaluate corrosion resistance and repassivation behavior. Quantitative analysis based on ASTM G119 revealed that MEASS showed a 68% lower total material loss compared to 304SS and a 55% lower loss compared to S31254. MEASS also exhibited the lowest corrosion current density (1.46 μA/cm<sup>2</sup>) under tribocorrosion conditions, representing an 83% reduction compared to 304SS. These improvements are attributed to the higher chromium and nickel contents of MEASS, which enhance passive film stability and reduce susceptibility to localized corrosion. The results demonstrate that MEASS offers superior resistance to combined mechanical and corrosive degradation in chloride-containing environments. |
| format | Article |
| id | doaj-art-0f1e9bb16c1148708a5e6881c135aa6b |
| institution | OA Journals |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj-art-0f1e9bb16c1148708a5e6881c135aa6b2025-08-20T02:21:03ZengMDPI AGLubricants2075-44422025-06-0113626010.3390/lubricants13060260Tribocorrosion Behavior of a Medium-Entropy Austenitic Stainless Steel in 3.5 wt.% NaCl: A Comparative Study with 304 and S31254 Stainless SteelsChun-Hao Wang0Shih-Yen Huang1Yu-Ren Chu2Peng-Shu Hsu3Hung-Wei Yen4I-Chung Cheng5Peng-Wei Chu6Yueh-Lien Lee7Department of Engineering Science and Ocean Engineering, National Taiwan University, Taipei 106319, TaiwanDepartment of Engineering Science and Ocean Engineering, National Taiwan University, Taipei 106319, TaiwanDepartment of Engineering Science and Ocean Engineering, National Taiwan University, Taipei 106319, TaiwanDepartment of Engineering Science and Ocean Engineering, National Taiwan University, Taipei 106319, TaiwanDepartment of Materials Science and Engineering, National Taiwan University, Taipei 106319, TaiwanDepartment of Mechanical Engineering, National Taiwan University, Taipei 106319, TaiwanDepartment of Engineering and System Science, National Tsing Hua University, Hsinchu 300044, TaiwanDepartment of Engineering Science and Ocean Engineering, National Taiwan University, Taipei 106319, TaiwanThis study investigates the tribocorrosion behavior of 304 stainless steel (304SS), S31254 super austenitic stainless steel (S31254 SASS), and a medium-entropy austenitic stainless steel (MEASS) in 3.5 wt.% NaCl solution under sliding conditions. The objective is to clarify the performance differences among these alloys when exposed to simultaneous mechanical wear and corrosion. Electrochemical techniques, including potentiodynamic polarization and potentiostatic sliding tests, were used to evaluate corrosion resistance and repassivation behavior. Quantitative analysis based on ASTM G119 revealed that MEASS showed a 68% lower total material loss compared to 304SS and a 55% lower loss compared to S31254. MEASS also exhibited the lowest corrosion current density (1.46 μA/cm<sup>2</sup>) under tribocorrosion conditions, representing an 83% reduction compared to 304SS. These improvements are attributed to the higher chromium and nickel contents of MEASS, which enhance passive film stability and reduce susceptibility to localized corrosion. The results demonstrate that MEASS offers superior resistance to combined mechanical and corrosive degradation in chloride-containing environments.https://www.mdpi.com/2075-4442/13/6/260tribocorrosionmedium-entropy austenitic super stainless steelpotentiodynamic polarization curvesrepassivationcorrosion-induced wear |
| spellingShingle | Chun-Hao Wang Shih-Yen Huang Yu-Ren Chu Peng-Shu Hsu Hung-Wei Yen I-Chung Cheng Peng-Wei Chu Yueh-Lien Lee Tribocorrosion Behavior of a Medium-Entropy Austenitic Stainless Steel in 3.5 wt.% NaCl: A Comparative Study with 304 and S31254 Stainless Steels Lubricants tribocorrosion medium-entropy austenitic super stainless steel potentiodynamic polarization curves repassivation corrosion-induced wear |
| title | Tribocorrosion Behavior of a Medium-Entropy Austenitic Stainless Steel in 3.5 wt.% NaCl: A Comparative Study with 304 and S31254 Stainless Steels |
| title_full | Tribocorrosion Behavior of a Medium-Entropy Austenitic Stainless Steel in 3.5 wt.% NaCl: A Comparative Study with 304 and S31254 Stainless Steels |
| title_fullStr | Tribocorrosion Behavior of a Medium-Entropy Austenitic Stainless Steel in 3.5 wt.% NaCl: A Comparative Study with 304 and S31254 Stainless Steels |
| title_full_unstemmed | Tribocorrosion Behavior of a Medium-Entropy Austenitic Stainless Steel in 3.5 wt.% NaCl: A Comparative Study with 304 and S31254 Stainless Steels |
| title_short | Tribocorrosion Behavior of a Medium-Entropy Austenitic Stainless Steel in 3.5 wt.% NaCl: A Comparative Study with 304 and S31254 Stainless Steels |
| title_sort | tribocorrosion behavior of a medium entropy austenitic stainless steel in 3 5 wt nacl a comparative study with 304 and s31254 stainless steels |
| topic | tribocorrosion medium-entropy austenitic super stainless steel potentiodynamic polarization curves repassivation corrosion-induced wear |
| url | https://www.mdpi.com/2075-4442/13/6/260 |
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