Effect of Temperature on Corrosion Resistance of Layered Double Hydroxides Conversion Coatings on Magnesium Alloys Based on a Closed-Cycle System
The effect of temperature on the corrosion resistance of layered double hydroxide (LDH) conversion coatings on AZ91D magnesium alloy, based on a closed-cycle system, was investigated. Scanning electron microscopy (SEM), photoelectron spectroscopy (XPS), and X-ray diffractometry (GAXRD) were used to...
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MDPI AG
2021-10-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/10/1658 |
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| author | Xiaochen Zhang Zhijuan Yin Bateer Buhe Jiajie Wang Lin Mao Bin Liu Peng Zhou Yang Zhao Tao Zhang Fuhui Wang |
| author_facet | Xiaochen Zhang Zhijuan Yin Bateer Buhe Jiajie Wang Lin Mao Bin Liu Peng Zhou Yang Zhao Tao Zhang Fuhui Wang |
| author_sort | Xiaochen Zhang |
| collection | DOAJ |
| description | The effect of temperature on the corrosion resistance of layered double hydroxide (LDH) conversion coatings on AZ91D magnesium alloy, based on a closed-cycle system, was investigated. Scanning electron microscopy (SEM), photoelectron spectroscopy (XPS), and X-ray diffractometry (GAXRD) were used to study the surface morphology, chemical composition, and phase composition of the conversion coating. The corrosion resistance of the LDH conversion coating was determined through electropotentiometric polarisation curve and hydrogen evolution and immersion tests. The results showed that the conversion coating has the highest density and a more uniform, complete, and effective corrosion resistance at 50 °C. The chemical composition of the LDH conversion coating mainly comprises C, O, Mg, and Al, and the main phase is Mg<sub>6</sub>Al<sub>2</sub>(OH)<sub>16</sub>CO<sub>3</sub>·4H<sub>2</sub>O. |
| first_indexed | 2024-03-10T06:22:47Z |
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| id | doaj.art-2bab4d61eac044e5aa0dda074126d4ea |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T06:22:47Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-2bab4d61eac044e5aa0dda074126d4ea2023-11-22T19:10:15ZengMDPI AGMetals2075-47012021-10-011110165810.3390/met11101658Effect of Temperature on Corrosion Resistance of Layered Double Hydroxides Conversion Coatings on Magnesium Alloys Based on a Closed-Cycle SystemXiaochen Zhang0Zhijuan Yin1Bateer Buhe2Jiajie Wang3Lin Mao4Bin Liu5Peng Zhou6Yang Zhao7Tao Zhang8Fuhui Wang9Heilongjiang Institute of Technology, College of Materials Chemical and Engineering, Harbin 150050, ChinaHeilongjiang Institute of Technology, College of Materials Chemical and Engineering, Harbin 150050, ChinaHeilongjiang Institute of Technology, College of Materials Chemical and Engineering, Harbin 150050, ChinaHeilongjiang Institute of Technology, College of Materials Chemical and Engineering, Harbin 150050, ChinaSchool of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, ChinaCollege of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, ChinaShenyang National Laboratory for Materials Science, Corrosion and Protection Division, Northeastern University, Shenyang 110819, ChinaShenyang National Laboratory for Materials Science, Corrosion and Protection Division, Northeastern University, Shenyang 110819, ChinaShenyang National Laboratory for Materials Science, Corrosion and Protection Division, Northeastern University, Shenyang 110819, ChinaShenyang National Laboratory for Materials Science, Corrosion and Protection Division, Northeastern University, Shenyang 110819, ChinaThe effect of temperature on the corrosion resistance of layered double hydroxide (LDH) conversion coatings on AZ91D magnesium alloy, based on a closed-cycle system, was investigated. Scanning electron microscopy (SEM), photoelectron spectroscopy (XPS), and X-ray diffractometry (GAXRD) were used to study the surface morphology, chemical composition, and phase composition of the conversion coating. The corrosion resistance of the LDH conversion coating was determined through electropotentiometric polarisation curve and hydrogen evolution and immersion tests. The results showed that the conversion coating has the highest density and a more uniform, complete, and effective corrosion resistance at 50 °C. The chemical composition of the LDH conversion coating mainly comprises C, O, Mg, and Al, and the main phase is Mg<sub>6</sub>Al<sub>2</sub>(OH)<sub>16</sub>CO<sub>3</sub>·4H<sub>2</sub>O.https://www.mdpi.com/2075-4701/11/10/1658AZ91D magnesium alloyLDH conversion coatingclosed-cycle systemtemperaturecorrosion resistance |
| spellingShingle | Xiaochen Zhang Zhijuan Yin Bateer Buhe Jiajie Wang Lin Mao Bin Liu Peng Zhou Yang Zhao Tao Zhang Fuhui Wang Effect of Temperature on Corrosion Resistance of Layered Double Hydroxides Conversion Coatings on Magnesium Alloys Based on a Closed-Cycle System Metals AZ91D magnesium alloy LDH conversion coating closed-cycle system temperature corrosion resistance |
| title | Effect of Temperature on Corrosion Resistance of Layered Double Hydroxides Conversion Coatings on Magnesium Alloys Based on a Closed-Cycle System |
| title_full | Effect of Temperature on Corrosion Resistance of Layered Double Hydroxides Conversion Coatings on Magnesium Alloys Based on a Closed-Cycle System |
| title_fullStr | Effect of Temperature on Corrosion Resistance of Layered Double Hydroxides Conversion Coatings on Magnesium Alloys Based on a Closed-Cycle System |
| title_full_unstemmed | Effect of Temperature on Corrosion Resistance of Layered Double Hydroxides Conversion Coatings on Magnesium Alloys Based on a Closed-Cycle System |
| title_short | Effect of Temperature on Corrosion Resistance of Layered Double Hydroxides Conversion Coatings on Magnesium Alloys Based on a Closed-Cycle System |
| title_sort | effect of temperature on corrosion resistance of layered double hydroxides conversion coatings on magnesium alloys based on a closed cycle system |
| topic | AZ91D magnesium alloy LDH conversion coating closed-cycle system temperature corrosion resistance |
| url | https://www.mdpi.com/2075-4701/11/10/1658 |
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