| 不同镁合金支架材料MAO/PLLA复合膜研究 |
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| 引用本文： | 逯 平,方铭中,曹 路,许鑫华. 不同镁合金支架材料MAO/PLLA复合膜研究[J]. 稀有金属材料与工程, 2011, 40(12): 2232-2235 |
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| 作者姓名： | 逯 平 方铭中 曹 路 许鑫华 |
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| 作者单位： | 1. 天津大学天津市复合材料与功能化重点实验室,天津,300072
2. 天津市胸科医院,天津,300051 |
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| 基金项目： | 天津市应用基础及前沿技术研究计划(天津市自然科学基金)资助（08JCZDJC17900） |
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| 摘 要： | 两种系列的镁合金WE42与AM20微弧氧化(MAO)后用浸渍法对微弧氧化膜进行聚乳酸(PLLA)封孔处理制备复合涂层,通过扫描电镜(SEM)分析微弧氧化膜及聚乳酸封孔膜的表面形貌及结构,X射线衍射(XRD)分析微弧氧化膜的主要成分为MgSiO3和SiO2,通过腐蚀失重测定试样的失重率.在37℃的hank's模拟体液中测...
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| 关 键 词： | 镁合金 稀土 微弧氧化 支架 |
| 收稿时间： | 2010-12-18 |
Research of MAO/PLLA Composite Coating on Different Magnesium Alloy Stent Materials |
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| Lu Ping,Fang Mingzhong,Cao Lu and Xu Xinhua. Research of MAO/PLLA Composite Coating on Different Magnesium Alloy Stent Materials[J]. Rare Metal Materials and Engineering, 2011, 40(12): 2232-2235 |
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| Authors: | Lu Ping Fang Mingzhong Cao Lu Xu Xinhua |
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| Affiliation: | Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, China;Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, China;Tianjin Chest Hospital, Tianjin 300051, China;Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, China |
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| Abstract: | Micro-arc oxidation (MAO) layers which were prepared on magnesium alloy WE42 and AM20 by MAO were sealed with PLLA by immersion technique to get composite coatings. The microstructure of the MAO coatings and the composite coatings were analyzed by scanning electron microscopy. The composition of MAO coating is MgSiO3 and SiO2 by X-ray diffractometer (XRD) and the rate of mass loss were tested by immersion test. Electrochemical impedance spectroscopy (EIS) shows that PLLA coating seals the pores in the MAO coating and improves the corrosion resistance by preventing the corrosive ions from diffusing to the magnesium alloy substrate. This composite coating is of high biocompatibility so it is of significance to improve the property of bioabsorbable magnesium stent. |
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| Keywords: | magnesium alloy rare earth micro-arc oxidation stent |
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