Study on Synergistic Corrosion Inhibition Effect between Calcium Lignosulfonate (CLS) and Inorganic Inhibitors on Q235 Carbon Steel in Alkaline Environment with Cl<sup>−</sup>
The synergistic corrosion inhibition effect between calcium lignosulfonate (CLS) and three kinds of inorganic inhibitors (Na<sub>2</sub>MoO<sub>4</sub>, Na<sub>2</sub>SnO<sub>3</sub>, and NaWO<sub>4</sub>) with various molar ratios on Q235...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/25/18/4200 |
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| author | Bing Lin Junlei Tang Yingying Wang Hu Wang Yu Zuo |
| author_facet | Bing Lin Junlei Tang Yingying Wang Hu Wang Yu Zuo |
| author_sort | Bing Lin |
| collection | DOAJ |
| description | The synergistic corrosion inhibition effect between calcium lignosulfonate (CLS) and three kinds of inorganic inhibitors (Na<sub>2</sub>MoO<sub>4</sub>, Na<sub>2</sub>SnO<sub>3</sub>, and NaWO<sub>4</sub>) with various molar ratios on Q235 carbon steel in alkaline solution (pH 11.5) with 0.02 mol/L NaCl was investigated by cyclic potentiodynamic polarization, electrochemical impedance spectroscopy, linear polarization, scanning electron microscopy, and X-ray photoelectron spectroscopy. Molybdate and stannate in hybrid inhibitor could promote the passivation of steel and form a complex film, which could suppress the corrosion effectively. Moreover, the insoluble metal oxides in the complex film formed by three kinds of inorganic inhibitor could help the adsorption of CLS onto the steel surface. The CLS molecules could adsorb onto the steel surface and metal oxides to form an adsorption film to protect the steel from corrosion. A three-layer protection film formed by a hybrid inhibitor, including passivation film, deposition film, and adsorption film, would effectively inhibit the corrosion reactions on the steel surface. The CLS compound with molybdate with the ratio of 2:3 shows the best inhibition effect on both general corrosion and localized corrosion. |
| first_indexed | 2024-03-10T16:21:32Z |
| format | Article |
| id | doaj.art-69c7b606c7144ead9bc0fa8551576bbb |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T16:21:32Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-69c7b606c7144ead9bc0fa8551576bbb2023-11-20T13:37:42ZengMDPI AGMolecules1420-30492020-09-012518420010.3390/molecules25184200Study on Synergistic Corrosion Inhibition Effect between Calcium Lignosulfonate (CLS) and Inorganic Inhibitors on Q235 Carbon Steel in Alkaline Environment with Cl<sup>−</sup>Bing Lin0Junlei Tang1Yingying Wang2Hu Wang3Yu Zuo4School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, ChinaSchool of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, ChinaSchool of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, ChinaSchool of Material Science and Engineering, Southwest Petroleum University, Chengdu 610500, ChinaBeijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, ChinaThe synergistic corrosion inhibition effect between calcium lignosulfonate (CLS) and three kinds of inorganic inhibitors (Na<sub>2</sub>MoO<sub>4</sub>, Na<sub>2</sub>SnO<sub>3</sub>, and NaWO<sub>4</sub>) with various molar ratios on Q235 carbon steel in alkaline solution (pH 11.5) with 0.02 mol/L NaCl was investigated by cyclic potentiodynamic polarization, electrochemical impedance spectroscopy, linear polarization, scanning electron microscopy, and X-ray photoelectron spectroscopy. Molybdate and stannate in hybrid inhibitor could promote the passivation of steel and form a complex film, which could suppress the corrosion effectively. Moreover, the insoluble metal oxides in the complex film formed by three kinds of inorganic inhibitor could help the adsorption of CLS onto the steel surface. The CLS molecules could adsorb onto the steel surface and metal oxides to form an adsorption film to protect the steel from corrosion. A three-layer protection film formed by a hybrid inhibitor, including passivation film, deposition film, and adsorption film, would effectively inhibit the corrosion reactions on the steel surface. The CLS compound with molybdate with the ratio of 2:3 shows the best inhibition effect on both general corrosion and localized corrosion.https://www.mdpi.com/1420-3049/25/18/4200corrosion inhibitorsynergistic effectelectrochemical measurementsinhibition film |
| spellingShingle | Bing Lin Junlei Tang Yingying Wang Hu Wang Yu Zuo Study on Synergistic Corrosion Inhibition Effect between Calcium Lignosulfonate (CLS) and Inorganic Inhibitors on Q235 Carbon Steel in Alkaline Environment with Cl<sup>−</sup> Molecules corrosion inhibitor synergistic effect electrochemical measurements inhibition film |
| title | Study on Synergistic Corrosion Inhibition Effect between Calcium Lignosulfonate (CLS) and Inorganic Inhibitors on Q235 Carbon Steel in Alkaline Environment with Cl<sup>−</sup> |
| title_full | Study on Synergistic Corrosion Inhibition Effect between Calcium Lignosulfonate (CLS) and Inorganic Inhibitors on Q235 Carbon Steel in Alkaline Environment with Cl<sup>−</sup> |
| title_fullStr | Study on Synergistic Corrosion Inhibition Effect between Calcium Lignosulfonate (CLS) and Inorganic Inhibitors on Q235 Carbon Steel in Alkaline Environment with Cl<sup>−</sup> |
| title_full_unstemmed | Study on Synergistic Corrosion Inhibition Effect between Calcium Lignosulfonate (CLS) and Inorganic Inhibitors on Q235 Carbon Steel in Alkaline Environment with Cl<sup>−</sup> |
| title_short | Study on Synergistic Corrosion Inhibition Effect between Calcium Lignosulfonate (CLS) and Inorganic Inhibitors on Q235 Carbon Steel in Alkaline Environment with Cl<sup>−</sup> |
| title_sort | study on synergistic corrosion inhibition effect between calcium lignosulfonate cls and inorganic inhibitors on q235 carbon steel in alkaline environment with cl sup sup |
| topic | corrosion inhibitor synergistic effect electrochemical measurements inhibition film |
| url | https://www.mdpi.com/1420-3049/25/18/4200 |
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