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Effect of Temperature on Corrosion Resistance of Layered Double Hydroxides Conversion Coatings on Magnesium Alloys Based on a Closed-Cycle System
| Content Provider | MDPI |
|---|---|
| Author | Zhang, Xiaochen Yin, Zhijuan Buhe, Bateer Wang, Jiajie Mao, Lin Liu, Bin Zhou, Peng Zhao, Yang Zhang, Tao Wang, Fuhui |
| Copyright Year | 2021 |
| 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 $Mg_{6}Al_{2}(OH)_{16}CO_{3}·4H_{2}$O. |
| Starting Page | 1658 |
| e-ISSN | 20754701 |
| DOI | 10.3390/met11101658 |
| Journal | Metals |
| Issue Number | 10 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-10-19 |
| Access Restriction | Open |
| Subject Keyword | Metals Az91d Magnesium Alloy Ldh Conversion Coating Closed-cycle System Temperature Corrosion Resistance |
| Content Type | Text |
| Resource Type | Article |