In vivo corrosion behavior of pure magnesium in femur bone of rabbit
In vivo corrosion behavior of pure magnesium in femur bone of rabbit
复制标题
纯镁在兔股骨中的体内腐蚀行为
DOI：
10.1016/j.jallcom.2020.156506
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发表时间：
2020
影响因子：
6.2
通讯作者：
Wei Ke
中科院分区：
文献类型：
--
作者：
Mingyang Ma;Durga Bhakta Pokharel;Junhua Dong;Liping Wu;Runying Zhao;Yue Zhu;Jiaru Hou;Jieya Xie;Shuanghui Sui;Changgang Wang;Wei Ke
用交流阻抗法(EIS)监测纯镁植入兔股骨后的腐蚀演化过程。用扫描电子显微镜(SEM)结合能谱(EDS)、X射线光电子能谱(XPS)、X射线衍射仪(X射线衍射仪)和电子探针(EPMA)对注入纯镁表面和截面的腐蚀产物进行了表面和截面形貌、化学成分、物相和元素分布的分析。结果表明，随着注入时间的延长，纯镁的耐蚀性先降低后提高。腐蚀产物为氢氧化镁(Mg(OH)2)、辉石(Mg5(CO3)4(OH)2·5H2O)、一水方解石(CaCO3·H2O)、柯夫钙石(Mg2(PO4)(OH)·3H2O)和羟基磷灰石(Ca5(PO4)3(OH))。
The corrosion evolution of pure magnesium implanted in femur bone of the rabbit was monitored by electrochemical impedance spectroscopy (EIS). The surface and cross-section morphologies, chemical compositions, phases and elemental distributions of the corrosion products formed on the implanted pure Mg were analyzed by scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and electron probe micro-analyzer (EPMA), respectively. The results showed that the corrosion resistance of the implanted pure Mg decreased first and then increased with the implantation time. Magnesium hydroxide (Mg(OH)2), dypingite (Mg5(CO3)4(OH)2·5H2O), monohydrocalcite (CaCO3·H2O), kovdorskite (Mg2(PO4)(OH)·3H2O) and hydroxyapatite (Ca5(PO4)3(OH)) constituted the corrosion products in which magnesium hydroxide was enriched in the inner layer, and dypingite and kovdorskite as the principal phases were enriched in the middle layer, while monohydrocalcite and hydroxylapatite as the minor phases accumulated in the outside layer.