Synthesis and properties of CaTiO3-containing coating on AZ31 magnesium alloy by micro-arc oxidation
Synthesis and properties of CaTiO3-containing coating on AZ31 magnesium alloy by micro-arc oxidation
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DOI：
10.1016/j.matlet.2012.11.017
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发表时间：
2013-02-15
影响因子：
3
通讯作者：
Wang, Fuping
中科院分区：
文献类型：
--
作者：
Tang, Hui;Wang, Fuping
镁及其合金由于其有吸引力的生物特性而被认为是可生物降解的植入材料。但镁的耐腐蚀性差和生理环境下的惰性生物活性仍然阻碍了镁的应用。在本文中，通过微弧氧化（MAO）在AZ31镁合金表面沉积了含CaTiO3的涂层。分别通过扫描电子显微镜（SEM）和X射线衍射（XRD）分析微观结构和成分。通过电化学测试和模拟体液浸泡（SBF）研究了腐蚀行为和磷灰石形成能力。结果表明，MAO涂层显着提高了AZ31镁合金的耐腐蚀性能，增强了磷灰石形成能力。皇冠版权所有 (C) 2012 由 Elsevier B.V. 出版。保留所有权利。
Magnesium and its alloys are thought as biodegradable implant materials due to their attractive biological properties. But the application of magnesium is still hampered by their poor corrosion resistance and inert bioactivity in physiological circumstances. In this article, a CaTiO3-containing coating was deposited on AZ31 magnesium alloy surface by micro-arc oxidation (MAO). The microstructure and composition were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The corrosion behavior and apatite-forming ability were studied by electrochemical tests and immersing in simulated body fluids (SBF). The results show that the MAO coating significantly improves the corrosion resistance of AZ31 magnesium alloy and enhances the apatite formation ability. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.