在含有0.042 mol/L Ca2+、0.025 mol/L H,PO-4及2.5×10-4mol/L柠檬酸根的电解液中进行阴极电沉积,成功地在NiTi合金表面制备了羟基磷灰石(HA)涂层.在电沉积之前,用5 mol/LNaOH对NiTi合金进行碱热预处理,可在其表面形成一层纳米针状氧化物.与不加柠檬酸根的电解液相比,从柠檬酸根改性的电解液中制备的涂层更加致密、均匀和细腻,表明柠檬酸根明显抑制了HA的结晶生长.模拟体液浸泡实验证明,柠檬酸根改性的羟基磷灰石涂层能够诱导碳磷灰石在模拟生理环境下的生长,具有较好的生物活性.
参考文献
| [1] | OTSUKA K;WAYMAN C M.Shape Memory Materials[M].London:cambridge University Press,1998 |
| [2] | Maria Vallet-Regi .Ceramics for medical applications[J].Journal of the Chemical Society, Dalton Transactions.Inorganic Chemistry,2001(2):97-108. |
| [3] | SHIRKHANZADEH M .Bioactive calcium phosphate coatings prepared by electrodeposition[J].Journal of Materials Science Letters,1991,10(23):1415-1417. |
| [4] | 胡皓冰,林昌健,陈菲,胡仁,郭明.电化学沉积制备羟基磷灰石涂层及机理研究[J].电化学,2002(03):288-294. |
| [5] | 胡仁,时海燕,林理文,庄燕燕,林昌健.电化学沉积羟基磷灰石过程晶体生长行为[J].物理化学学报,2005(02):197-201. |
| [6] | 李成峰.添加柠檬酸对纳米羟基磷灰石结晶行为的影响[J].硅酸盐学报,2008(09):1236-1241. |
| [7] | 杨成鑫,林东洋,江勇,王小祥.含柠檬酸根电解液中钛表面电解沉积羟基磷灰石晶体的动力学过程[J].无机材料学报,2010(02):206-210. |
| [8] | Liu XY;Chu PK;Ding CX .Surface modification of titanium, titanium alloys, and related materials for biomedical applications[J].Materials Science & Engineering, R. Reports: A Review Journal,2004(3/4):49-121. |
| [9] | Kim HM;Miyaji F;Kokubo T;Nishiguchi S;Nakamura T .Graded surface structure of bioactive titanium prepared by chemical treatment.[J].Journal of biomedical materials research, Part B. Applied biomaterials,1999(2):100-107. |
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