| 离子束合成TiO2薄膜对医用NiTi合金表面的改性 |
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| 引用本文： | 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, 15(4): 445-450 |
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| 作者姓名： | 刘敬肖 杨大智 徐久军 陈吉华 蔡英骥 |
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| 作者单位： | 大连理工大学三束材料表面改性国家重点联合实验室;大连轻工业学院;大连理工大学;大连海事大学;大连轻工业学院 |
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| 基金项目： | 科技部科技攻关项目,国家高技术研究发展计划(863计划),国家自然科学基金,国家重点实验室基金,96-907-04-05,715-002-0240,50081001,9807,,,, |
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| 摘 要： | 采用离子束增强沉积法制备TiO2薄膜,对医用NiTi合金进行表面改性处理。系统研究了薄膜的表面组成、结构、形貌及耐蚀性、亲水性等与血液相容性相关的表面性质。NiTi合金表面沉积TiO2薄膜后,抗模拟体液的腐蚀性提高,凝血时间延长。为进一步提高TiO2薄膜的抗凝血性,对TiO2薄膜的进一步表面改性－表面结合肝素分子进行了初步尝试,结果表明,薄膜表面组成发生变化,表面亲水性进一步提高。
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| 关 键 词： | 离子束NiTi合金 TiO2薄膜 表面性质 表面改性 |
| 文章编号： | 1005-3083(2001)04-0445-06 |
| 修稿时间： | 2000-08-29 |
SURFACE MODIFICATION OF BIOMEDICAL NiTi ALLOY BY ION BEAM SYNTHESIZING TiO2 FILM |
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| LIU Jingxiao YANG Dazhi XU Jiujun CHEN Jihua CAI Yingji. SURFACE MODIFICATION OF BIOMEDICAL NiTi ALLOY BY ION BEAM SYNTHESIZING TiO2 FILM[J]. Chinese Journal of Materials Research, 2001, 15(4): 445-450 |
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| Authors: | LIU Jingxiao YANG Dazhi XU Jiujun CHEN Jihua CAI Yingji |
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| Abstract: | TiO_2 film on the surface of NiTi alloy was synthesized by ion beam enhanced deposition (IBED). Surface composition, structure and surface morphology as well as the corrosion resistance and hydrophilia of the film, which were correlated with blood compatibility intimately, were investigated. The corrosion resistance and blood compatibility of NiTi alloy were improved after coating with TiO2 film on the surface. In order to further improve the anticoagulation of TiO_2 film, heparin molecule was attached on TiO_2 film surface. The results showed that N, S. which come from heparin molecule, were present on the surface. and the other components of Ols (532.9eV and 531.9eV) became prominent after modification, indicating that the amount of C-O and -OH components increased. The contact angle measurement showed that TiO_2 film is hydrophilic, and the hydrophilia was further improved after attaching heparin molecule. |
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| Keywords: | Ion beam NiTi alloy TiO_2 film Surface properties surface modification |
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