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Effect of GelMA Hydrogel Coatings on Corrosion Resistance and Biocompatibility of MAO-Coated Mg Alloys
Weng, Wenxian1; Wu, Weiwei1; Yu, Xiaoming2; Sun, Mingyue1; Lin, Zhensheng1; Ibrahim, Muhammad3; Yang, Huazhe1
Corresponding AuthorYang, Huazhe(hzyang@cmu.edu.cn)
2020-09-01
Source PublicationMATERIALS
Volume13Issue:17Pages:15
AbstractMicro-arc oxidation (MAO) treatment is a simple and effective technique to improve the corrosion resistance for magnesium alloys. However, the presence of micro-pores and cracks on the coatings provides paths for corrosive ions to penetrate into and react with the substrate, limiting the long-term corrosion resistance. In this paper, we designed a composite coating with which GelMA hydrogel coatings with varying thicknesses were prepared on the surface of MAO-coated magnesium alloys via a dip-coating method, aiming to improve the biocorrosion resistance and biocompatibility. The surface morphology, the chemical composition of GelMA hydrogels, and the crystallographic structure of magnesium alloys were characterized by scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD), respectively. The corrosion resistance and biocompatibility of all samples were evaluated through electrochemical and biological experiments. The results demonstrated that the addition of GelMA hydrogel could effectively seal the pores and improve the corrosion resistance and biocompatibility of MAO-coated magnesium alloys, especially for the sample with one layer of GelMA hydrogel, showing high cell proliferation rate, and its current density (I-corr) was two orders of magnitude lower than that of the MAO coating. Besides, the balance mechanism between corrosion and protection was proposed. As a result, the GelMA hydrogel coatings are beneficial to the application of MAO-coated magnesium alloys in bone tissue engineering and other fields.
KeywordMAO Mg alloys GelMA hydrogel
Funding OrganizationNatural Science Foundation of Liaoning Province of China ; Foundation of the Education Department of Liaoning Province in China ; National Natural Science Foundation of China
DOI10.3390/ma13173834
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of Liaoning Province of China[2020-MS-166] ; Foundation of the Education Department of Liaoning Province in China[QN2019035] ; National Natural Science Foundation of China[81500897]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000569614700001
PublisherMDPI
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140540
Collection中国科学院金属研究所
Corresponding AuthorYang, Huazhe
Affiliation1.China Med Univ, Sch Fundamental Sci, Shenyang 110122, Peoples R China
2.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Weng, Wenxian,Wu, Weiwei,Yu, Xiaoming,et al. Effect of GelMA Hydrogel Coatings on Corrosion Resistance and Biocompatibility of MAO-Coated Mg Alloys[J]. MATERIALS,2020,13(17):15.
APA Weng, Wenxian.,Wu, Weiwei.,Yu, Xiaoming.,Sun, Mingyue.,Lin, Zhensheng.,...&Yang, Huazhe.(2020).Effect of GelMA Hydrogel Coatings on Corrosion Resistance and Biocompatibility of MAO-Coated Mg Alloys.MATERIALS,13(17),15.
MLA Weng, Wenxian,et al."Effect of GelMA Hydrogel Coatings on Corrosion Resistance and Biocompatibility of MAO-Coated Mg Alloys".MATERIALS 13.17(2020):15.
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