脉冲电化学沉积羟基磷灰石涂层改善Mg-Nd-Zn-Zr合金在模拟体液中的耐腐蚀性能  

Improvement of Corrosion Performance in Simulated Body Fluid Solution of Mg-Nd-Zn-Zr Alloy Coated with Hydroxyapatite by Pulse Eletrodeposition

作　　者：宗阳[1] 牛佳林[1] 毛琳[1] 章晓波[1] 袁广银[1,2] 丁文江[1,2] 

机构地区：[1]上海交通大学轻合金精密成型国家工程研究中心,上海200240 [2]上海交通大学金属基复合材料国家重点实验室,上海200240

出　　处：《腐蚀与防护》2011年第6期430-433,437,共5页Corrosion & Protection

基　　金：上海市基础研究重点项目(No.08JC1412200;No.10JC1407400);教育部新世纪优秀人才支持计划(No.NCET-07-0554)

摘　　要：采用脉冲电化学沉积的方法,在新开发的Mg-Nd-Zn-Zr合金(JDBM)表面制备出了羟基磷灰石(HA)涂层,并对其耐蚀性能和血液相容性进行了研究。结果表明,表面改性后的JDBM镁合金具有更好的耐腐蚀性能,腐蚀后涂层保持了良好的完整性,析氢试验也表明涂层对基体在仿生腐蚀环境中有一定的保护作用,且不会引起模拟体液pH值较大的变化。体外溶血试验表明JDBM合金不会产生溶血的情况,经过HA表面改性过的样品不会破坏其良好的血液相容性。The corrosion behaviors and blood compatibility of a newly developed Mg Nd-Zn-Zr magnesium alloy （JDBM） coated with hydroxyapatite（HA） by the pulse electrodeposition process were studied. JDBM alloy showed better corrosion resistance after surface modification, and the coating maintained good integrity after immersion in simulated body fluid （SBF） solution for 10 days. Hydrogen test showed that H^coating had good protective effect on the substrate in bionic corrosive environment. And JDBM alloy with HA coating caused little variation of pH value. Hemolysis test also showed that both JDBM alloy and JDBM coated with HA had good blood compatibility. The results demonstrate that the JDBM alloy is a promising magnesium alloy that can be applied as a degradable biomaterial.

关 键 词：镁合金 生物材料 脉冲电化学沉积 耐腐蚀性能 血液相容性 

分 类 号：TG174.44[金属学及工艺—金属表面处理] R318[金属学及工艺—金属学]