采用 2 kW Nd-YAG激光对生物医用 NiTi形状记忆合金在空气、氩气和氮气环境中进行表面重熔处理以改善合金的表面性能.结果表明:在上述三种气氛中,通过激光重熔处理均可以明显提高 NiTi合金表层的纯净度和致密度;改变合金的组成物和表面成分,使 NiTi合金在模拟体液环境中具有更好的耐蚀性并降低合金 Ni离子的溶出速度,进而提高合金的生物相容性.在相同激光处理参数条件下,氮气环境中重熔的 NiTi合金表现出最低的 Ni离子溶出速度.
参考文献
| [1] | Kapanen A;Danilov A;Lehenkari P;Ryhanen J;Jamsa T;Tuukkanen J .Effect of metal alloy surface stresses on the viability of ROS-17/2.8 osteoblastic cells.[J].Biomaterials,2002(17):3733-3740. |
| [2] | P. Rocher;L. El Medawar;J.-C. Hornez;M. Traisnel;J. Breme;H. F. Hildebrand .Biocorrosion and cytocompatibility assessment of NiTi shape memory alloys[J].Scripta materialia,2004(2):255-260. |
| [3] | Armitage DA;Parker TL;Grant DM .Biocompatibility and hemocompatibility of surface-modified NiTi alloys.[J].Journal of biomedical materials research, Part B. Applied biomaterials,2003(1):129-137. |
| [4] | Shih C C;Lin S J;Chen Y L et al.The cytotoxicity of corrosion products of nitinol stent wire on cultured smooth muscle cells[J].Journal of Biomedical Materials Research,2000,52:395-403. |
| [5] | 刘敬肖,杨大智.医用NiTi合金表面溶胶-凝胶法制备含磷TiO2薄膜[J].硅酸盐学报,2002(01):45-50. |
| [6] | 杨贤金,崔振铎,赵乃勤,宋文静,曾晟宇,朱胜利,姚康德.Ca/P层对NiTi形状记忆合金生物相容性的影响[J].材料研究学报,2000(05):481-484. |
| [7] | Man H C;Cui Z D;Yue T M .Corrosion properties of laser surface melted NiTi shape memory alloy[J].Scripta Materialia,2001,45(12):1447-1453. |
| [8] | Peter Schaaf .Laser nitriding of metals[J].Progress in materials science,2002(1):1-161. |
| [9] | Cui ZD.;Man HC.;Yang XJ. .Characterization of the laser gas nitrided surface of NiTi shape memory alloy[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2003(0):388-393. |
| [10] | Starosvetsky D;Gotman I .TiN coating improves the corrosion behavior of superelastic NiTi surgical alloy[J].Surface and Coatings Technology,2001,148:268-276. |
| [11] | L. Ponsonnet;K. Reybier;N. Jaffrezic;V. Comte;C. Lagneau;M. Lissac;C. Martelet .Relationship between surface properties (roughness, wettability) of titanium and titanium alloys and cell behaviour[J].Materials science & engineering, C. Biomimetic and supramolecular systems,2003(4):551-560. |
| [12] | O'Brien B sci.com;Carroll WM;Kelly MJ .Passivation of nitinol wire for vascular implants--a demonstration of the benefits.[J].Biomaterials,2002(8):1739-1748. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%