Stearate as a green corrosion inhibitor of magnesium alloy ZE41 in sulfate medium
The efficiency of stearate as a corrosion inhibitor for magnesium alloy ZE41 has been studied in sodium sulfate medium, employing electrochemical techniques like potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results of polarization study imply that stearate funct...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-11-01
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| Series: | Arabian Journal of Chemistry |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535214002846 |
| _version_ | 1811339346639323136 |
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| author | Nandini Dindodi A. Nityananda Shetty |
| author_facet | Nandini Dindodi A. Nityananda Shetty |
| author_sort | Nandini Dindodi |
| collection | DOAJ |
| description | The efficiency of stearate as a corrosion inhibitor for magnesium alloy ZE41 has been studied in sodium sulfate medium, employing electrochemical techniques like potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results of polarization study imply that stearate functions as a mixed-type corrosion inhibitor with a predominant anodic control. The adsorption of stearate on alloy surface is found to obey the Langmuir adsorption isotherm. The proposed inhibition mechanism involved adsorption of stearate onto metal surface, followed by precipitation of magnesium stearate within the microdefects of Mg(OH)2 surface film which enhanced the barrier effect of an otherwise porous partially protective film. Keywords: Alloy, Magnesium, Impedance, Polarization, Stearate |
| first_indexed | 2024-04-13T18:24:59Z |
| format | Article |
| id | doaj.art-e3a3f322670c48b8ba8511572baa7f0d |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-13T18:24:59Z |
| publishDate | 2019-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-e3a3f322670c48b8ba8511572baa7f0d2022-12-22T02:35:17ZengElsevierArabian Journal of Chemistry1878-53522019-11-0112712771289Stearate as a green corrosion inhibitor of magnesium alloy ZE41 in sulfate mediumNandini Dindodi0A. Nityananda Shetty1Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Post Srinivasnagar, Mangalore 575025, Karnataka, IndiaCorresponding author. Tel.: +91 9448779922; fax: +91 824 2474033.; Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Post Srinivasnagar, Mangalore 575025, Karnataka, IndiaThe efficiency of stearate as a corrosion inhibitor for magnesium alloy ZE41 has been studied in sodium sulfate medium, employing electrochemical techniques like potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results of polarization study imply that stearate functions as a mixed-type corrosion inhibitor with a predominant anodic control. The adsorption of stearate on alloy surface is found to obey the Langmuir adsorption isotherm. The proposed inhibition mechanism involved adsorption of stearate onto metal surface, followed by precipitation of magnesium stearate within the microdefects of Mg(OH)2 surface film which enhanced the barrier effect of an otherwise porous partially protective film. Keywords: Alloy, Magnesium, Impedance, Polarization, Stearatehttp://www.sciencedirect.com/science/article/pii/S1878535214002846 |
| spellingShingle | Nandini Dindodi A. Nityananda Shetty Stearate as a green corrosion inhibitor of magnesium alloy ZE41 in sulfate medium Arabian Journal of Chemistry |
| title | Stearate as a green corrosion inhibitor of magnesium alloy ZE41 in sulfate medium |
| title_full | Stearate as a green corrosion inhibitor of magnesium alloy ZE41 in sulfate medium |
| title_fullStr | Stearate as a green corrosion inhibitor of magnesium alloy ZE41 in sulfate medium |
| title_full_unstemmed | Stearate as a green corrosion inhibitor of magnesium alloy ZE41 in sulfate medium |
| title_short | Stearate as a green corrosion inhibitor of magnesium alloy ZE41 in sulfate medium |
| title_sort | stearate as a green corrosion inhibitor of magnesium alloy ze41 in sulfate medium |
| url | http://www.sciencedirect.com/science/article/pii/S1878535214002846 |
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