| 医用NiTi合金表面溶胶-凝胶法制备含磷TiO2薄膜 |
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| 引用本文： | 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, 30(1): 45-50 |
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| 作者姓名： | 刘敬肖 杨大智 |
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| 作者单位： | 1. 大连理工大学材料系三束材料表面改性国家重点实验室,大连,116024;大连轻工业学院材料科学与工程系,大连,116034
2. 大连理工大学材料系三束材料表面改性国家重点实验室,大连,116024 |
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| 基金项目： | 国家自然科学基金项目(50081001);国家科技部科技攻关项目(96-907-04-05);国家高技术(863)新材料领域资助项目(715-002-0240);大连理工大学三束实验室项目(9807). |
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| 摘 要： | 采用溶胶－凝胶法在医用NiTi形状记忆合金表面制备了含磷TiO2薄膜，原子力显微镜（AFM）分析表明，薄膜由微米级颗粒堆积而成，薄膜表面均匀平滑，通过阳极极化曲线测试对NiTi合金基体及其表面镀有含磷TiO2膜后在模拟体液中的腐蚀行为进行了研究，结果表明，含磷TiO2膜可作为NiTi合金的表面保护膜,使其抗腐蚀性显著提高，体外生物活性测试表明，含磷TiO2薄膜在模拟体液中能够诱导Ca,P沉积，具有一定的生物活性。
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| 关 键 词： | 镍钛合金 溶胶－凝胶法 含磷二氧化钛薄膜 抗腐蚀性 生物活性 医用材料 形态记忆合金 |
| 文章编号： | 0454-5648(2002)01-0045-06 |
| 修稿时间： | 2001-06-05 |
PREPARATION OF TiO2 FILM CONTAINING PHOSPHORUS ON BIOMEDICAL NiTi ALLOY BY SOL-GEL METHOD |
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| Liu Jingxiao ,,Yang Dazhi. PREPARATION OF TiO2 FILM CONTAINING PHOSPHORUS ON BIOMEDICAL NiTi ALLOY BY SOL-GEL METHOD[J]. Journal of The Chinese Ceramic Society, 2002, 30(1): 45-50 |
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| Authors: | Liu Jingxiao Yang Dazhi |
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| Affiliation: | Liu Jingxiao 1,2,Yang Dazhi 1 |
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| Abstract: | TiO 2 thin films containing phosphorus were prepared by sol-gel method in order to further improve the biocompatibility of NiTi surgical alloy. Atomic force microscopy (AFM) analyses indicate that the films, packed by micrometer_sized particle, are uniform and smooth. The corrosion behavior of NiTi alloy with the surface coated film and non_treated samples were investigated in Tyrode's biological solution by anodic polarization curves measurement. The results indicate that the corrosion resistance of NiTi alloy is improved due to the protective film on the surface. In vitro the bioactivity in simulated body fluid (SBF) was tested and the surface compositions was analyzed by XPS. The results show that the films can induce Ca, P deposition on the surface. It is therefore suggested that sol-gel_derived TiO 2 films containing P can be used to improve the corrosion resistance and bioactivity of NiTi alloy. |
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| Keywords: | nickel-titanium alloy sol-gel method titanium oxide film containing phosphorus corrosion resistance bioactivity |
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