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Surface Characterization and Corrosion Resistance of Biomedical AZ31 Mg Alloy Treated by Microarc Fluorination

The application prospect of biodegradable materials is being studied extensively. However, the high corrosion rate and its alloys in body fluids have been major limitations of the application of pure Mg (magnesium). To improve corrosion resistance of biodegradable AZ31 Mg alloy, we adopted microarc...

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Autores principales: Sun, Lin, Zhao, Bing Cheng, Wang, Teng, Cui, Jia Yi, Zhang, ShuXin, Li, Feng, Zhang, Qianqian, Cai, HongXin, Jiang, Heng Bo, Lee, Eui-Seok
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7641723/
https://www.ncbi.nlm.nih.gov/pubmed/33193944
http://dx.doi.org/10.1155/2020/5936789
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author Sun, Lin
Zhao, Bing Cheng
Wang, Teng
Cui, Jia Yi
Zhang, ShuXin
Li, Feng
Zhang, Qianqian
Cai, HongXin
Jiang, Heng Bo
Lee, Eui-Seok
author_facet Sun, Lin
Zhao, Bing Cheng
Wang, Teng
Cui, Jia Yi
Zhang, ShuXin
Li, Feng
Zhang, Qianqian
Cai, HongXin
Jiang, Heng Bo
Lee, Eui-Seok
author_sort Sun, Lin
collection PubMed
description The application prospect of biodegradable materials is being studied extensively. However, the high corrosion rate and its alloys in body fluids have been major limitations of the application of pure Mg (magnesium). To improve corrosion resistance of biodegradable AZ31 Mg alloy, we adopted microarc fluorination within a voltage range of 100-300 V in 46% hydrofluoric acid. To obtain morphologies, chemical compositions, and structural characteristics, field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) were performed, respectively. Results showed that the coating was mainly composed of MgF(2). Electrochemical corrosion and immersion tests proved that the corrosion resistance of MAF-treated AZ31 Mg alloy was significantly improved compared with untreated AZ31 Mg alloy in HBSS (Hank's Balanced Salt Solution). Current densities of AZ31, MAF100, MAF150, MAF200, MAF250, and MAF300 were 342.4, 0.295, 0.228, 0.177, 0.199, and 0.212 μA/cm(2), respectively. The roughness test indicated that samples under MAF treatment of 200 V, 250 V, and 300 V had large surface roughness. Meanwhile, the contact angle measurement and surface free energy test suggested that those samples had smaller contact angle and higher SFE than Ti. Thus, MAF-treated AZ31 Mg alloy might have promising application in various fields.
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spelling pubmed-76417232020-11-13 Surface Characterization and Corrosion Resistance of Biomedical AZ31 Mg Alloy Treated by Microarc Fluorination Sun, Lin Zhao, Bing Cheng Wang, Teng Cui, Jia Yi Zhang, ShuXin Li, Feng Zhang, Qianqian Cai, HongXin Jiang, Heng Bo Lee, Eui-Seok Scanning Research Article The application prospect of biodegradable materials is being studied extensively. However, the high corrosion rate and its alloys in body fluids have been major limitations of the application of pure Mg (magnesium). To improve corrosion resistance of biodegradable AZ31 Mg alloy, we adopted microarc fluorination within a voltage range of 100-300 V in 46% hydrofluoric acid. To obtain morphologies, chemical compositions, and structural characteristics, field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) were performed, respectively. Results showed that the coating was mainly composed of MgF(2). Electrochemical corrosion and immersion tests proved that the corrosion resistance of MAF-treated AZ31 Mg alloy was significantly improved compared with untreated AZ31 Mg alloy in HBSS (Hank's Balanced Salt Solution). Current densities of AZ31, MAF100, MAF150, MAF200, MAF250, and MAF300 were 342.4, 0.295, 0.228, 0.177, 0.199, and 0.212 μA/cm(2), respectively. The roughness test indicated that samples under MAF treatment of 200 V, 250 V, and 300 V had large surface roughness. Meanwhile, the contact angle measurement and surface free energy test suggested that those samples had smaller contact angle and higher SFE than Ti. Thus, MAF-treated AZ31 Mg alloy might have promising application in various fields. Hindawi 2020-10-27 /pmc/articles/PMC7641723/ /pubmed/33193944 http://dx.doi.org/10.1155/2020/5936789 Text en Copyright © 2020 Lin Sun et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Sun, Lin
Zhao, Bing Cheng
Wang, Teng
Cui, Jia Yi
Zhang, ShuXin
Li, Feng
Zhang, Qianqian
Cai, HongXin
Jiang, Heng Bo
Lee, Eui-Seok
Surface Characterization and Corrosion Resistance of Biomedical AZ31 Mg Alloy Treated by Microarc Fluorination
title Surface Characterization and Corrosion Resistance of Biomedical AZ31 Mg Alloy Treated by Microarc Fluorination
title_full Surface Characterization and Corrosion Resistance of Biomedical AZ31 Mg Alloy Treated by Microarc Fluorination
title_fullStr Surface Characterization and Corrosion Resistance of Biomedical AZ31 Mg Alloy Treated by Microarc Fluorination
title_full_unstemmed Surface Characterization and Corrosion Resistance of Biomedical AZ31 Mg Alloy Treated by Microarc Fluorination
title_short Surface Characterization and Corrosion Resistance of Biomedical AZ31 Mg Alloy Treated by Microarc Fluorination
title_sort surface characterization and corrosion resistance of biomedical az31 mg alloy treated by microarc fluorination
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7641723/
https://www.ncbi.nlm.nih.gov/pubmed/33193944
http://dx.doi.org/10.1155/2020/5936789
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