ZIF-8-based micro-arc oxidation composite coatings enhanced the corrosion resistance and superhydrophobicity of a Mg alloy
Mg alloys are considered the most promising engineering materials because of their unique properties. However, the uncontrolled corrosion rate of these alloys limits their applications. Therefore, in this study, a micro-arc oxidation layer was used as a transition layer to “directly” grow a zinc-bas...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2023-04-01
|
| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956721002061 |
| _version_ | 1797812825628868608 |
|---|---|
| author | Shiquan Jiang Zhiyuan Zhang Dong Wang Yuqing Wen Ning Peng Wei Shang |
| author_facet | Shiquan Jiang Zhiyuan Zhang Dong Wang Yuqing Wen Ning Peng Wei Shang |
| author_sort | Shiquan Jiang |
| collection | DOAJ |
| description | Mg alloys are considered the most promising engineering materials because of their unique properties. However, the uncontrolled corrosion rate of these alloys limits their applications. Therefore, in this study, a micro-arc oxidation layer was used as a transition layer to “directly” grow a zinc-based metal-organic framework (MOF) composite coating on the surface of a Mg alloy (AZ91D). Herein, the two zeolitic imidazolate framework (ZIF-8) coatings with different morphologies were separately prepared by homologous metal oxide induction and a one-step in-situ growth method. The superhydrophobic composite coating showed strong hydrophobicity and self-cleaning properties, which could prevent the penetration of water and corrosive ions (Cl−) into the surface of AZ91D. Electrochemical tests demonstrated that the super-hydrophobic composite coatings greatly enhanced the corrosion resistance of AZ91D, and the corrosion current density decreased from 10−5 to 10−9 A/cm2. These results indicate that the ZIF-8 coatings are beneficial for improving the hydrophobicity and enhancing the corrosion resistance of Mg alloys. Therefore, MOF composite coatings provide a new strategy that can be used to prepare multifunctional anticorrosion coatings on metal substrates. |
| first_indexed | 2024-03-13T07:43:09Z |
| format | Article |
| id | doaj.art-bf9d3f30622144ebb962e7ce40ce3adf |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-03-13T07:43:09Z |
| publishDate | 2023-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-bf9d3f30622144ebb962e7ce40ce3adf2023-06-03T04:22:04ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672023-04-0111413671380ZIF-8-based micro-arc oxidation composite coatings enhanced the corrosion resistance and superhydrophobicity of a Mg alloyShiquan Jiang0Zhiyuan Zhang1Dong Wang2Yuqing Wen3Ning Peng4Wei Shang5Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, ChinaGuangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, ChinaGuangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, ChinaCorresponding authors.; Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, ChinaGuangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, ChinaCorresponding authors.; Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, ChinaMg alloys are considered the most promising engineering materials because of their unique properties. However, the uncontrolled corrosion rate of these alloys limits their applications. Therefore, in this study, a micro-arc oxidation layer was used as a transition layer to “directly” grow a zinc-based metal-organic framework (MOF) composite coating on the surface of a Mg alloy (AZ91D). Herein, the two zeolitic imidazolate framework (ZIF-8) coatings with different morphologies were separately prepared by homologous metal oxide induction and a one-step in-situ growth method. The superhydrophobic composite coating showed strong hydrophobicity and self-cleaning properties, which could prevent the penetration of water and corrosive ions (Cl−) into the surface of AZ91D. Electrochemical tests demonstrated that the super-hydrophobic composite coatings greatly enhanced the corrosion resistance of AZ91D, and the corrosion current density decreased from 10−5 to 10−9 A/cm2. These results indicate that the ZIF-8 coatings are beneficial for improving the hydrophobicity and enhancing the corrosion resistance of Mg alloys. Therefore, MOF composite coatings provide a new strategy that can be used to prepare multifunctional anticorrosion coatings on metal substrates.http://www.sciencedirect.com/science/article/pii/S2213956721002061Mg alloyComposite coatingMetal-organic frameworkCorrosion resistanceSuperhydrophobicity |
| spellingShingle | Shiquan Jiang Zhiyuan Zhang Dong Wang Yuqing Wen Ning Peng Wei Shang ZIF-8-based micro-arc oxidation composite coatings enhanced the corrosion resistance and superhydrophobicity of a Mg alloy Journal of Magnesium and Alloys Mg alloy Composite coating Metal-organic framework Corrosion resistance Superhydrophobicity |
| title | ZIF-8-based micro-arc oxidation composite coatings enhanced the corrosion resistance and superhydrophobicity of a Mg alloy |
| title_full | ZIF-8-based micro-arc oxidation composite coatings enhanced the corrosion resistance and superhydrophobicity of a Mg alloy |
| title_fullStr | ZIF-8-based micro-arc oxidation composite coatings enhanced the corrosion resistance and superhydrophobicity of a Mg alloy |
| title_full_unstemmed | ZIF-8-based micro-arc oxidation composite coatings enhanced the corrosion resistance and superhydrophobicity of a Mg alloy |
| title_short | ZIF-8-based micro-arc oxidation composite coatings enhanced the corrosion resistance and superhydrophobicity of a Mg alloy |
| title_sort | zif 8 based micro arc oxidation composite coatings enhanced the corrosion resistance and superhydrophobicity of a mg alloy |
| topic | Mg alloy Composite coating Metal-organic framework Corrosion resistance Superhydrophobicity |
| url | http://www.sciencedirect.com/science/article/pii/S2213956721002061 |
| work_keys_str_mv | AT shiquanjiang zif8basedmicroarcoxidationcompositecoatingsenhancedthecorrosionresistanceandsuperhydrophobicityofamgalloy AT zhiyuanzhang zif8basedmicroarcoxidationcompositecoatingsenhancedthecorrosionresistanceandsuperhydrophobicityofamgalloy AT dongwang zif8basedmicroarcoxidationcompositecoatingsenhancedthecorrosionresistanceandsuperhydrophobicityofamgalloy AT yuqingwen zif8basedmicroarcoxidationcompositecoatingsenhancedthecorrosionresistanceandsuperhydrophobicityofamgalloy AT ningpeng zif8basedmicroarcoxidationcompositecoatingsenhancedthecorrosionresistanceandsuperhydrophobicityofamgalloy AT weishang zif8basedmicroarcoxidationcompositecoatingsenhancedthecorrosionresistanceandsuperhydrophobicityofamgalloy |