| 镍钛合金的溶胶-凝胶法多孔TiO2薄膜表面改性（英文） |
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| 引用本文： | 付涛,吴晓明,吴锋,罗孟,董兵辉,纪元.镍钛合金的溶胶-凝胶法多孔TiO2薄膜表面改性（英文）[J].中国有色金属学会会刊,2012,22(7):1661-1666. |
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| 作者姓名： | 付涛 吴晓明 吴锋 罗孟 董兵辉 纪元 |
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| 作者单位： | 西安交通大学生命科学与技术学院,生物医学信息工程教育部重点实验室;燕山大学亚稳材料制备技术与科学国家重点实验室;西安交通大学医学院 |
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| 基金项目： | Project (xjj2011096) supported by the Fundamental Research Fund for the Central Universities,China;Project (201107) supported by the Open Project Program of State Key Laboratory of Metastable Materials Science and Technology,China;Project (50901058) supported by the National Natural Science Foundation of China |
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| 摘 要： | 在经过 NaOH-HCl 预处理的镍钛合金基体上,采用溶胶-凝胶法制备纳米多孔 TiO2薄膜;当涂覆一层致密内膜和一层多孔外膜时,可得到无裂纹的薄膜(试样 TC1+1)。X 射线衍射表明,TiO2薄膜由锐钛矿组成,在热处理的基体中还检测到少量的 Ni4Ti3相。X 射线光电子谱分析表明,试样 TC1+1 的 TiO2薄膜完全覆盖了镍钛合金基体。试样 TC1+1 的表面亲水,接触角约为 20°,紫外光照处理 15 min 后接触角降低到(9.2±3.2)°。在 0.9% NaCl溶液中的动电位极化实验表明,试样 TC1+1 的耐蚀性高于抛光的镍钛合金试样的。
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| 关 键 词： | 镍钛合金 二氧化钛 溶胶-凝胶法 亲水性 耐蚀性 |
| 收稿时间： | 27 August 2011 |
Surface modification of NiTi alloy by sol-gel derived porous TiO2 film |
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| FU Tao,WU Xiao-ming,WU Feng,L UO Meng,DONG Bing-hui,JI Yuan.Surface modification of NiTi alloy by sol-gel derived porous TiO2 film[J].Transactions of Nonferrous Metals Society of China,2012,22(7):1661-1666. |
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| Authors: | FU Tao WU Xiao-ming WU Feng L UO Meng DONG Bing-hui JI Yuan |
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| Affiliation: | 1.Key Laboratory of Biomedical Information Engineering of Ministry of Education,School of Life Science and Technology,Xi’an Jiaotong University,Xi’an 710049,China;2.State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,China;3.College of Medicine,Xi’an Jiaotong University,Xi’an 710061,China |
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| Abstract: | Titania films with nano-sized pores were prepared on the NaOH–HCl pretreated NiTi alloy substrate by sol-gel method. A crack-free film is obtained for the sample with a dense inner layer and a porous outside layer (sample TC1+1). The X-ray diffraction shows that the titania films are composed of anatase, and a little Ni4Ti3 phase in the heat treated substrate is also detected. The X-ray photoelectron spectroscopy results indicate that the titania film completely covered the NiTi substrate for sample TC1+1. The sample TC1+1 is hydrophilic with a contact angle about 20(, and UV illumination treatment for 15 min further decreases the contact angle to (9.2(3.2)°. The potentiodynamic polarization test in 0.9% NaCl solution reveals a better corrosion resistance of sample TC1+1 than the polished NiTi sample. |
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| Keywords: | NiTi alloy titania sol?gel method hydrophilicity corrosion resistance |
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