Influence of zinc ion implantation on surface nanomechanical performance and corrosion resistance of biomedical magnesium–calcium alloys
Influence of zinc ion implantation on surface nanomechanical performance and corrosion resistance of biomedical magnesium–calcium alloys
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DOI：
10.1016/j.apsusc.2008.02.117
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发表时间：
2008-06
影响因子：
6.7
通讯作者：
Y. Wan;Guang-yao Xiong;Honglin Luo;F. He;Y. Huang;Y. L. Wang
中科院分区：
文献类型：
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作者：
Y. Wan;Guang-yao Xiong;Honglin Luo;F. He;Y. Huang;Y. L. Wang
镁及其合金在生物医学领域有着广阔的应用前景，可作为植入物、骨固定装置和组织工程支架。但是，必须控制其腐蚀速率。在这项研究中，生物医用镁钙（Mg-Ca）合金离子注入锌。研究了离子注入镁钙合金表面的纳米力学性能和腐蚀行为。结果表明，注入剂量为0.9× 1017 ions/cm 2的锌离子可显著提高表面硬度和弹性模量。然而，耐蚀性的结果表明，锌离子注入镁钙合金的腐蚀行为恶化。因此，锌不是用于离子注入处理生物医用Mg-Ca合金的有利元素。
It is believed that magnesium and its alloys may find applications in biomedical fields as implants, bone fixation devices, and tissue engineering scaffolds. However, their corrosion rate must be controlled. In this study, biomedical magnesium–calcium (Mg–Ca) alloys were ion-implanted with zinc. The surface nanomechanical performance and corrosion behavior of the ion-implanted Mg–Ca alloys are determined. The results show that zinc ion implantation at a dose of 0.9×1017ions/cm2significantly improves the surface hardness and modulus. However, the results on corrosion resistance reveal that zinc ion implantation degrades the corrosion behavior of Mg–Ca alloys. Thus, zinc is not a favorable element for the ion implantation treatment of biomedical Mg–Ca alloys.