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首页> 外文期刊>RSC Advances >Performance of hydroxyapatite coatings electrodeposited on micro-arc oxidized magnesium alloys using a static magnetic field
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Performance of hydroxyapatite coatings electrodeposited on micro-arc oxidized magnesium alloys using a static magnetic field

机译：静电磁场电沉积在微弧氧化镁合金上的羟基磷灰石涂层的性能

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摘要

Biodegradable magnesium (Mg) and its alloy are some of the most widely used functional materials for osteosynthetic applications due to their rapid degradation properties, and thus they do not require surgical removal. However, the rapid degradation of magnesium alloy can cause a high alloy corrosion rate, which needs to be regulated during the bone healing process. In this study, we coated hydroxyapatite (HA) crystal nanostructures on magnesium alloy by an electrodeposition process in the presence of a static magnetic field to inhibit corrosion. The physical and chemical properties of the HA coatings were characterized using SEM, XRD, EDS, as well as a corrosion test. In addition, the interaction between HA coatings and osteoblast cell regulated cellular behavior was investigated. The result indicated that the corrosion resistance ability of the magnesium alloy coated with HA was significantly improved compared with the uncoated magnesium alloy. An initial corrosion potential of Ca-P composite coating at -0.5 V was achieved, which is almost one third of the potential value of the pure magnesium alloy (AZ91D). The proliferation, adhesion and expression analysis of IGF-1 protein indicated that the HA nanocrystals could enhance the viability of the cells. This work provides insight into the development of the next generation of biocompatible alloys for biomedical applications.
机译：可生物降解的镁（Mg）及其合金是由于其快速降解特性，骨合成应用的一些最广泛使用的功能材料，因此它们不需要外科手术。然而，镁合金的快速降解可能导致高合金腐蚀速率，这在骨愈合过程中需要受到调节。在该研究中，在存在静磁场的情况下，通过电沉积工艺涂覆在镁合金上的羟基磷灰石（HA）晶体纳米结构以抑制腐蚀。使用SEM，XRD，EDS以及腐蚀试验表征HA涂层的物理和化学性质。此外，研究了HA涂层与成骨细胞间的相互作用调节了细胞行为。结果表明，与未涂覆的镁合金相比，涂覆用HA的镁合金的耐腐蚀能力显着改善。实现了-0.5V的Ca-P复合涂层的初始腐蚀电位，其几乎是纯镁合金（AZ91D）的潜在值的三分之一。 IGF-1蛋白的增殖，粘附性和表达分析表明，HA纳米晶体可以增强细胞的活力。这项工作提供了深入了解生物医学应用的下一代生物相容性合金的发展。

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  • 来源
    《RSC Advances》 |2015年第19期|共7页
  • 作者

    Xu Quan; Liu Yao; Liu Chuangwei; Tian Ang; Shi Xiaoguo; Dong Chenbo; Zhou Ying; Zhou Hongjun;

  • 作者单位

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

    Univ N Texas Dept Mech Engn Denton TX 76207 USA;

    Northeastern Univ Sch Mat &

    Met Shenyang 110819 Peoples R China;

    Northeastern Univ Sch Mat &

    Met Shenyang 110819 Peoples R China;

    Rice Univ Dept Civil &

    Environm Engn Houston TX 77005 USA;

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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