The Effect of Corrosion Inhibitors on the Corrosion Behavior of Ductile Cast Iron
Based on actual service environment parameters, this experiment investigated the change in the corrosion rate of nodular cast iron (DCI) in an environment containing organic (triethanolamine phosphate, PTEA) and inorganic (hexametaphosphate, SHMP) inhibitors, and analyzed the effects of both inhibit...
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MDPI AG
2025-01-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/15/1/70 |
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| author | Jing Liu Bingqin Wang Tianqi Chen Lianjun Hao Jun Wu Chao Liu |
| author_facet | Jing Liu Bingqin Wang Tianqi Chen Lianjun Hao Jun Wu Chao Liu |
| author_sort | Jing Liu |
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| description | Based on actual service environment parameters, this experiment investigated the change in the corrosion rate of nodular cast iron (DCI) in an environment containing organic (triethanolamine phosphate, PTEA) and inorganic (hexametaphosphate, SHMP) inhibitors, and analyzed the effects of both inhibitors and the pH value of the solution on the corrosion behavior of DCI. Additionally, a variable flow rate device was used to conduct immersion tests, enabling the accurate evaluation of the materials’ corrosion resistance in an actual service environment. After a certain period, the corrosion of the DCI surface was observed, and the weight loss corrosion rate of the materials was calculated to analyze the differences in corrosion resistance under varying environmental parameters. It was found that the inhibitory effect of both inhibitors on DCI increased with the immersion time, and the inhibitory effect of the SHMP inhibitor was more pronounced under alkaline conditions. Based on the electrochemical and flow rate immersion test results, it can be concluded that, in the solution environment used in this experiment, the inhibitory effect of the SHMP inhibitor on DCI is stronger than that of the PTEA inhibitor. |
| format | Article |
| id | doaj-art-6cc1b61edec54fb18c9785ad9d2795e4 |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-6cc1b61edec54fb18c9785ad9d2795e42025-01-24T13:41:35ZengMDPI AGMetals2075-47012025-01-011517010.3390/met15010070The Effect of Corrosion Inhibitors on the Corrosion Behavior of Ductile Cast IronJing Liu0Bingqin Wang1Tianqi Chen2Lianjun Hao3Jun Wu4Chao Liu5Wuhan Research Institute of Materials Protection Co., Ltd., 126 Bao Feng Erlu, Wuhan 430030, ChinaNational Materials Corrosion and Protection Data Center, Institute of Advanced Materials & Technology, University of Science and Technology Beijing, Beijing 100083, ChinaNational Materials Corrosion and Protection Data Center, Institute of Advanced Materials & Technology, University of Science and Technology Beijing, Beijing 100083, ChinaNational Materials Corrosion and Protection Data Center, Institute of Advanced Materials & Technology, University of Science and Technology Beijing, Beijing 100083, ChinaWuhan Research Institute of Materials Protection Co., Ltd., 126 Bao Feng Erlu, Wuhan 430030, ChinaNational Materials Corrosion and Protection Data Center, Institute of Advanced Materials & Technology, University of Science and Technology Beijing, Beijing 100083, ChinaBased on actual service environment parameters, this experiment investigated the change in the corrosion rate of nodular cast iron (DCI) in an environment containing organic (triethanolamine phosphate, PTEA) and inorganic (hexametaphosphate, SHMP) inhibitors, and analyzed the effects of both inhibitors and the pH value of the solution on the corrosion behavior of DCI. Additionally, a variable flow rate device was used to conduct immersion tests, enabling the accurate evaluation of the materials’ corrosion resistance in an actual service environment. After a certain period, the corrosion of the DCI surface was observed, and the weight loss corrosion rate of the materials was calculated to analyze the differences in corrosion resistance under varying environmental parameters. It was found that the inhibitory effect of both inhibitors on DCI increased with the immersion time, and the inhibitory effect of the SHMP inhibitor was more pronounced under alkaline conditions. Based on the electrochemical and flow rate immersion test results, it can be concluded that, in the solution environment used in this experiment, the inhibitory effect of the SHMP inhibitor on DCI is stronger than that of the PTEA inhibitor.https://www.mdpi.com/2075-4701/15/1/70ductile ironcorrosion inhibitortriethanolamine phosphate (PTEA)sodium hexametaphosphate (SHMP) |
| spellingShingle | Jing Liu Bingqin Wang Tianqi Chen Lianjun Hao Jun Wu Chao Liu The Effect of Corrosion Inhibitors on the Corrosion Behavior of Ductile Cast Iron Metals ductile iron corrosion inhibitor triethanolamine phosphate (PTEA) sodium hexametaphosphate (SHMP) |
| title | The Effect of Corrosion Inhibitors on the Corrosion Behavior of Ductile Cast Iron |
| title_full | The Effect of Corrosion Inhibitors on the Corrosion Behavior of Ductile Cast Iron |
| title_fullStr | The Effect of Corrosion Inhibitors on the Corrosion Behavior of Ductile Cast Iron |
| title_full_unstemmed | The Effect of Corrosion Inhibitors on the Corrosion Behavior of Ductile Cast Iron |
| title_short | The Effect of Corrosion Inhibitors on the Corrosion Behavior of Ductile Cast Iron |
| title_sort | effect of corrosion inhibitors on the corrosion behavior of ductile cast iron |
| topic | ductile iron corrosion inhibitor triethanolamine phosphate (PTEA) sodium hexametaphosphate (SHMP) |
| url | https://www.mdpi.com/2075-4701/15/1/70 |
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