东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (10): 1466-1469.DOI: -

• 论著 • 上一篇    下一篇

用仿生涂层控制金属镁的降解速率

张雅静;武志林;刘越;张丹;   

  1. 东北大学材料与冶金学院;中国有色(沈阳)冶金机械有限公司;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 出版日期:2010-10-15 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    教育部归国基金资助项目(20081201-6);;

Controlling the biodegradation rate of magnesium by biomimetic coatings

Zhang, Ya-Jing (1); Wu, Zhi-Lin (2); Liu, Yue (1); Zhang, Dan (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; (2) NFC (Shenyang) Metallurgical Machinery Co., Ltd., Shenyang 110141, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-10-15 Published:2013-06-20
  • Contact: Zhang, Y.-J.
  • About author:-
  • Supported by:
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摘要： 在纯镁试样表面形成硅钙凝胶涂层,然后采用仿生法在纯镁试样及具有凝胶涂层试样表面形成羟基磷灰石涂层.利用X射线、能谱分析及扫描电子显微镜对形成的涂层进行表征.通过将试样浸入人体模拟液(SBF)中的腐蚀实验研究涂层对镁耐蚀性的影响.实验结果表明:采用仿生涂层技术,24h后在纯镁和具有凝胶涂层试样表面均可形成HA涂层,涂层降低了金属镁在人体模拟液中的腐蚀速率,通过控制涂层的成分及形貌,试样降解速率可控.

关键词: 镁, 硅胶凝胶, 羟基磷灰石, 腐蚀, 人体模拟液

Abstract: Silica and silica calcium sol-gels were coated on the surface of magnesium, and then the hydroxyapatite (HA) coating was formed on the surfaces of pure magnesium samples by biomimetic process, regardless of the sol-gel coating. The coating layers were characterized by XRD, EDX and SEM, and the morphology of sample surfaces was observed by an emission scanning electron microscope (FESEM). The samples were subsequently immersed in the simulated body fluid (SBF) for the degradation test. The results showed that HA coating is formed on the surface of pure magnesium 24 h after biomimetic process no matter whether the sol-gels have already been coated before. It was found that the HA coating can decrease the corrosion rate of the substrate in SBF, i.e., the degradation rate of samples is controllable if controlling the chemical composition and morphology of coating layers.

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