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碱热处理镁及其在仿生模拟体液中耐蚀性能
Corrosion Resistance of Alkali Heat Treated Magnesium in Bionics Simulated Body Fluid
【摘要】 为了提高纯镁在仿生模拟体液(SBF)中的耐腐蚀性能,对纯镁进行了碱热处理表面改性。结果表明,纯镁经碱热处理表面改性处理后,可获得致密的MgO层,有效地提高纯镁在SBF溶液中的耐腐蚀性能,并且在SBF溶液中浸泡14天后,表层为Ca/P摩尔比=1 858的钙磷基沉淀。
【Abstract】 The pure Mg samples were treated as surface modification by alkali heat treatment to improve its corrosion resistance in the simulated body fluid (SBF) solution.The result shows that after the surface modification by alkali heat treatment the pure Mg can obtain a dense and smooth MgO coating that can significantly improve its corrosion resistance in SBF solution.More importantly,it is also found that a Ca-P based deposit is formed on the surface after the samples were immersed in SBF for 14 days.The molar ratio of Ca/P of the deposit is 1.858.
【关键词】 镁;
生物材料;
表面改性;
碱热处理;
模拟体液;
【Key words】 Magnesium; biomaterials; surface modification; alkali heat-treatment; simulated body fluid (SBF);
【Key words】 Magnesium; biomaterials; surface modification; alkali heat-treatment; simulated body fluid (SBF);
【基金】 重庆市科技攻关重大专项(CSPC2004AA4003)
- 【文献出处】 金属热处理 ,Heat Treatment of Metals , 编辑部邮箱 ,2005年04期
- 【分类号】TG166.4
- 【被引频次】38
- 【下载频次】534