采用低温去合金化(Dealloying)处理法对医用NiTi合金进行表面脱镍改性.经SEM、XRD、AES、FTIR、XPS和模拟体液(SBF)仿生沉积等分析研究表明,NiTi合金经低温去合金化处理后,在合金表面选择性地除去了有害元素镍,在距表层约400 nm深度内原位制备出完全无镍的具有纳米网架结构的水合氧化钛膜,并在500℃,进行1h热处理,晶化为锐钛矿型二氧化钛.由于经低温去合金化脱镍的NiTi合金表面富含羟基(OH),在SBF溶液中具有良好的生物活性,从而提高了NiTi合金的生物相容性.
参考文献
| [1] | Shabalovskaya SA.;Anderegg JW. .SURFACE SPECTROSCOPIC CHARACTERIZATION OF TINI NEARLY EQUIATOMIC SHAPE MEMORY ALLOYS FOR IMPLANTS[J].Journal of Vacuum Science & Technology, A. Vacuum, Surfaces, and Films,1995(5):2624-2632. |
| [2] | 杨贤金,何菲,朱胜利,崔振铎,姚康德.化学修饰对NiTi形状记忆合金氧化膜的影响[J].功能材料,2002(02):169-171. |
| [3] | Ryhanen J et al.[J].Journal of Biomedical Materials Research,1997,35:451. |
| [4] | Tan L et al.[J].Acta Materialia,2002,50:4449. |
| [5] | Lackner J M.[J].Surface and Coatings Technology,2004(585):180-181. |
| [6] | Cheng F T et al.[J].Materials Letters,2005,59:1516. |
| [7] | Man H C et al.[J].Scripta Materialia,2001,45:1447. |
| [8] | Ray W.Y. Poon;Joan RY. Ho;Xuanyong Liu .Anti-corrosion performance of oxidized and oxygen plasma-implanted NiTi alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):444-451. |
| [9] | Liu JX.;Yang DZ.;Shi F.;Cai YJ. .Sol-gel deposited TiO2 film on NiTi surgical alloy for biocompatibility improvement[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2003(1/2):225-230. |
| [10] | Cisse O et al.[J].Journal of Biomedical Materials Research,2002,61:339. |
| [11] | Chartouni D;Meli F;Züttel A et al.[J].Journal of Alloys and Compounds,1996,241:160. |
| [12] | 周俊,储成林,钟志源.复合活化处理镍钛合金及磷灰石层的仿生沉积[J].稀有金属材料与工程,2006(06):994-997. |
| [13] | Brien B O' et al.[J].Biomaterials,2002,23:1739. |
| [14] | Cheng FT;Shi P;Man HC .A preliminary study of TiO2 deposition on NiTi by a hydrothermal method[J].Surface & Coatings Technology,2004(1):26-32. |
| [15] | 刘敬肖,杨大智,徐久军,陈吉华,蔡英骥.离子束合成TiO2薄膜对医用NiTi合金表面的改性[J].材料研究学报,2001(04):445-450. |
| [16] | 顾新丰,蒋垚,韩培,张小农.钛合金表面纳米化对成骨细胞黏附的影响[J].中国临床康复,2006(25):46-48,插图25-3. |
| [17] | Webster TJ;Ejiofor JU .Increased osteoblast adhesion on nanophase metals: Ti, Ti6Al4V, and CoCrMo.[J].Biomaterials,2004(19):4731-4739. |
| [18] | Green S M et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1997,224:21. |
| [19] | 杨贤金,朱胜利,崔振铎,姚康德.NiTi合金表面化学沉积羟基磷灰石生物活性层机理的研究[J].功能材料,2001(02):154-155. |
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