Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution
Corrosion resistance of sensitized austenitic stainless steel (SS) in chloride environments is currently the subject of numerous studies. Most of them are focused on neutral chloride solutions at room temperature and the experiments are carried out on ground stainless steels surfaces. This paper dea...
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MDPI AG
2022-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/23/8543 |
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| author | Viera Zatkalíková Milan Uhríčik Lenka Markovičová Lenka Kuchariková |
| author_facet | Viera Zatkalíková Milan Uhríčik Lenka Markovičová Lenka Kuchariková |
| author_sort | Viera Zatkalíková |
| collection | DOAJ |
| description | Corrosion resistance of sensitized austenitic stainless steel (SS) in chloride environments is currently the subject of numerous studies. Most of them are focused on neutral chloride solutions at room temperature and the experiments are carried out on ground stainless steels surfaces. This paper deals with the corrosion behavior of sensitized AISI 304 stainless steel in acid 1 M chloride solution (pH = 1.1) at the temperatures of 20 ± 3 °C and 50 °C. The specimens after sensitization are tested as covered by high-temperature surface oxides (“heat tinted”), and also after their chemical removal to assess the impact of the surface state on corrosion resistance. Potentiodynamic polarization (PP) and exposure immersion test are used as the independent corrosion tests. Microstructure before/after exposure immersion test is evaluated by optical microscopy (OM) and SEM. The results obtained showed that sensitization significantly conditions corrosion regardless of the removal of high-temperature oxides, and the elevated temperature mainly acts as its accelerating factor. |
| first_indexed | 2024-03-09T17:42:02Z |
| format | Article |
| id | doaj.art-cfb80e1aae944e9495f87c8bee0ec9a6 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T17:42:02Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-cfb80e1aae944e9495f87c8bee0ec9a62023-11-24T11:30:02ZengMDPI AGMaterials1996-19442022-11-011523854310.3390/ma15238543Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride SolutionViera Zatkalíková0Milan Uhríčik1Lenka Markovičová2Lenka Kuchariková3Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaDepartment of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaDepartment of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaDepartment of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaCorrosion resistance of sensitized austenitic stainless steel (SS) in chloride environments is currently the subject of numerous studies. Most of them are focused on neutral chloride solutions at room temperature and the experiments are carried out on ground stainless steels surfaces. This paper deals with the corrosion behavior of sensitized AISI 304 stainless steel in acid 1 M chloride solution (pH = 1.1) at the temperatures of 20 ± 3 °C and 50 °C. The specimens after sensitization are tested as covered by high-temperature surface oxides (“heat tinted”), and also after their chemical removal to assess the impact of the surface state on corrosion resistance. Potentiodynamic polarization (PP) and exposure immersion test are used as the independent corrosion tests. Microstructure before/after exposure immersion test is evaluated by optical microscopy (OM) and SEM. The results obtained showed that sensitization significantly conditions corrosion regardless of the removal of high-temperature oxides, and the elevated temperature mainly acts as its accelerating factor.https://www.mdpi.com/1996-1944/15/23/8543sensitizationaustenitic stainless steelcorrosionchromium depletionpotentiodynamic polarizationexposure immersion test |
| spellingShingle | Viera Zatkalíková Milan Uhríčik Lenka Markovičová Lenka Kuchariková Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution Materials sensitization austenitic stainless steel corrosion chromium depletion potentiodynamic polarization exposure immersion test |
| title | Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution |
| title_full | Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution |
| title_fullStr | Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution |
| title_full_unstemmed | Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution |
| title_short | Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution |
| title_sort | corrosion behavior of sensitized aisi 304 stainless steel in acid chloride solution |
| topic | sensitization austenitic stainless steel corrosion chromium depletion potentiodynamic polarization exposure immersion test |
| url | https://www.mdpi.com/1996-1944/15/23/8543 |
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