Study on the corrosion resistance and antibacterial properties of magnesium alloy MAO polylactic acid coating in simulated body fluid
文献类型：期刊论文
| 作者 | Wu, Xinhe2,3,5,6; Jiang, Quantong2,3,5,6; Wang, Jingjing4; Chu, Zhenhua1; Chen, Yandao2,4,5; Duan, Jizhou2,3,5,6; Hou, Baorong2,3,5,6 |
| 刊名 | PROGRESS IN ORGANIC COATINGS
 |
| 出版日期 | 2026-04-01 |
| 卷号 | 213页码:14 |
| 关键词 | Magnesium alloy Composite coating Corrosion resistance Biocompatibility Micro arc oxidation |
| ISSN号 | 0300-9440 |
| DOI | 10.1016/j.porgcoat.2026.110002 |
| 通讯作者 | Jiang, Quantong(jiangquantong@qdio.ac.cn) |
| 英文摘要 | Magnesium-based alloys are attractive candidates for biodegradable orthopedic implants owing to their excellent biocompatibility and bone-like mechanical properties; however, their excessively rapid corrosion in physiological environments often causes premature loss of mechanical integrity and adverse local reactions, limiting clinical translation. In this study, a micro-arc oxidation (MAO) ceramic layer and an outer polylactic acid (PLA) coating were constructed on a Magnesium alloy, and ZnTe particles were incorporated into the PLA layer at varying concentrations to obtain a ZnTe doped MAO/PLA composite coating with enhanced integrity and antibacterial function. The microstructure, coating morphology, and phase composition were characterized, and corrosion behavior in Hank's simulated body fluid was assessed by open-circuit potential and electrochemical impedance spectroscopy. Results show that the MAO layer forms a strongly adherent oxide barrier while the PLA topcoat effectively seals MAO micro-pores; ZnTe addition further improves coating compactness, leading to markedly increased potential stability and charge-transfer resistance relative to ZnTe-free coatings, indicating superior corrosion resistance. Immersion tests reveal that ZnTe incorporation enhances the buffering capacity of the system, mitigating the pH decrease associated with PLA hydrolysis. Antibacterial assays demonstrate a bactericidal rate exceeding 99% for ZnTe-containing coatings. Collectively, the ZnTe-doped MAO/PLA composite coating provides synergistic corrosion protection and robust antibacterial activity, offering a promising surface-engineering route to improve the long-term reliability of biodegradable magnesium implants. |
| WOS关键词 | ELECTROCHEMISTRY ; MECHANISM ; STEEL ; MG |
| 资助项目 | National Key Research and Development Program of China[2024YFB4207004] ; Qingdao Key Technology Research and Development Project[24-1-6-ghgg-2-hz] ; Wenhai Program of the S & T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology[2021WHZZB2301] |
| WOS研究方向 | Chemistry ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001680041600001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204679]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Jiang, Quantong |
| 作者单位 | 1.Shanghai Ocean Univ, Coll Engn Sci & Technol, Shanghai 201306, Peoples R China 2.Chinese Acad Sci, South China Sea Inst Oceanol, 164 Xingangxi Rd, Guangzhou 510301, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Adv Marine Mat, Qingdao 266071, Peoples R China 4.Qingdao Black Cat New Mat Res Inst Co Ltd, Qingdao 266500, Shandong, Peoples R China 5.Sanya Inst Ocean Ecoenvironm Engn, Sanya 572024, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Xinhe,Jiang, Quantong,Wang, Jingjing,et al. Study on the corrosion resistance and antibacterial properties of magnesium alloy MAO polylactic acid coating in simulated body fluid[J]. PROGRESS IN ORGANIC COATINGS,2026,213:14. |
| APA | Wu, Xinhe.,Jiang, Quantong.,Wang, Jingjing.,Chu, Zhenhua.,Chen, Yandao.,...&Hou, Baorong.(2026).Study on the corrosion resistance and antibacterial properties of magnesium alloy MAO polylactic acid coating in simulated body fluid.PROGRESS IN ORGANIC COATINGS,213,14. |
| MLA | Wu, Xinhe,et al."Study on the corrosion resistance and antibacterial properties of magnesium alloy MAO polylactic acid coating in simulated body fluid".PROGRESS IN ORGANIC COATINGS 213(2026):14. |
入库方式： OAI收割
来源：海洋研究所
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