采用浸泡法在Mg-Nd-Zn-Zr镁合金表面制备氟化镁钠膜，采用点滴法、电化学法和浸泡法评定镁合金基体和氟化镁钠膜的耐蚀性，采用扫描电镜(SEM)和能谱仪(EDS)分析氟化镁钠膜试样腐蚀前后的形貌及成分。结果表明，提高转化处理温度可显著减小氟化镁钠颗粒尺寸，而转化处理时间对颗粒尺寸影响较小；氟化镁钠颗粒通过二维形核后的台阶生长机制和螺旋生长机制长大；氟化镁钠膜可显著降低Mg-Nd-Zn-Zr镁合金在模拟体液中的平均析氢速率，在模拟体液中，氟化镁钠膜逐渐转变为氟化物和磷酸盐混合膜层，新膜层继续起到保护镁合金基体的作用。
The NaMgF3 films on the surface of Mg-Nd-Zn-Zr magnesium alloy were fabricated by immersion method. Their corrosion properties were valuated by dripping test, electrochemical test and immersion method, respectively. The microstructures of the original and corrosive samples were observed by SEM and their chemical compositions were analyzed by EDS. The results show that the size of NaMgF 3 particle is obviously reduced with the increase of conversion treatment temperature; however, it is little affected by the conversion treatment time. The NaMgF3 particles grow by two-dimensional nucleation, step growth mechanism and screw growth mechanism. The average hydrogen evolution rate of Mg-Nd-Zn-Zr magnesium alloy in simulated body fluid (SBF) solution can be significantly decreased by NaMgF3 film. The NaMgF 3 films gradually transform into a new film consisting of fluoride and phosphate in the SBF solution, which will continue to protect the magnesium alloy from the corrosion.
参考文献
| [1] | 张佳,宗阳,袁广银,常建卫,付鹏怀,丁文江.新型医用Mg-Nd-Zn-Zr镁合金在模拟体液中的降解行为[J].中国有色金属学报,2010(10):1989-1997. |
| [2] | 黄晶晶,任伊宾,张炳春,杨柯.镁及镁合金的生物相容性研究[J].稀有金属材料与工程,2007(06):1102-1105. |
| [3] | YANG J X;CUI F Z;LEE I S .Surface modification of magnesium alloys for biomedical applications[J].Annals of Biomedical Engineering,2011,39(07):1857-1871. |
| [4] | 许鑫华,程静,张春怀,闫学良,朱天兵,姚康德,曹路,刘寅.医用镁合金的生物腐蚀及高分子涂层处理[J].稀有金属材料与工程,2008(07):1225-1228. |
| [5] | 章晓波,袁广银,王章忠.铸造镁合金 Mg-Nd-Zn-Zr 的生物腐蚀性能[J].中国有色金属学报,2013(04):905-911. |
| [6] | 郭磊,刘魁,张世亮,黄晶晶,谭丽丽,杨柯.氧化镁膜AZ31B镁合金材料的细胞毒性研究[J].稀有金属材料与工程,2008(06):1027-1031. |
| [7] | 叶成红,奚廷斐,郑玉峰,王淑琴,李扬德.磷化修饰WE43镁合金的体外生物相容性及耐腐蚀性能[J].中国有色金属学报（英文版）,2013(04):996-1001. |
| [8] | 徐丽萍,张二林,杨珂.磷酸钙表面改性镁合金的生物腐蚀性能及细胞相容性[J].中国有色金属学报（英文版）,2012(08):2014-2020. |
| [9] | Mareike Lalk;Janin Reifenrath;Nina Angrisani;Alexandr Bondarenko;Jan-Marten Seitz;Peter P. Mueller;Andrea Meyer-Lindenberg .Fluoride and calcium-phosphate coated sponges of the magnesium alloy AX30 as bone grafts: a comparative study in rabbits[J].Journal of Materials Science. Materials in Medicine,2013(2):417-436. |
| [10] | Li, J.N.;Cao, P.;Zhang, X.N.;Zhang, S.X.;He, Y.H. .In vitro degradation and cell attachment of a PLGA coated biodegradable Mg-6Zn based alloy[J].Journal of Materials Science,2010(22):6038-6045. |
| [11] | 李绮,刘新杰,颜廷亭,谭丽丽,张炳春,杨柯.氟处理对AZ31B镁合金生物耐蚀降解行为的影响[J].稀有金属材料与工程,2011(10):1859-1863. |
| [12] | YAN Ting-ting;TAN Li-li;XIONG Dang-sheng;LIU Xin-jie ZHANG Bing-chun YANG Ke .Fluoride treatment and in vitro corrosion behavior of an AZ31B Mg alloy[J].Materials Science and Engineering A,2010,30(05):740-748. |
| [13] | Witte F;Fischer J;Nellesen J;Vogt C;Vogt J;Donath T;Beckmann F .In vivo corrosion and corrosion protection of magnesium alloy LAE442.[J].Acta biomaterialia,2010(5):1792-1799. |
| [14] | 王宪涛,郭磊,柴宏伟,付玉平,管俊林.氟化镁涂层AZ31B镁合金体内成骨作用的研究[J].中国医科大学学报,2011(10):870-873. |
| [15] | Bakhsheshi-Rad, H.R.;Idris, M.H.;Abdul-Kadir, M.R..Synthesis and in vitro degradation evaluation of the nano-HA/MgF_2 and DCPD/MgF_2 composite coating on biodegradable Mg-Ca-Zn alloy[J].Surface & Coatings Technology,2013:79-89. |
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