NiTi形状记忆合金表面TiO2薄膜的制备和结构研究  

Study on TiO_2 film formation and structure on NiTi shape memory alloy

作　　者：刘福[1] 辛铁柱[1] 王福平[2] 孙德智[3] 

机构地区：[1]哈尔滨工业大学 材料科学与工程学院,黑龙江哈尔滨150001 [2]哈尔滨工业大学 应用化学系,黑龙江哈尔滨150001 [3]哈尔滨工业大学 市政环境工程学院,黑龙江哈尔滨150001

出　　处：《燕山大学学报》2008年第3期214-217,共4页Journal of Yanshan University

基　　金：国家博士后科学基金(20060400811)

摘　　要：采用阳极氧化方法在NiTi形状记忆合金上制备了氧化膜。采用扫描电镜(SEM)、X射线衍射(XRD)、X射线光电子能谱仪(XPS)研究了氧化膜组织结构。XRD结果表明,氧化膜为非晶态,190℃下水热处理4h之后,非晶态转变为锐钛矿型TiO_2。采用改进的ASTMC-633方法测试了氧化膜与NiTi形状记忆合金基体的结合强度。An oxide film was produced on shape memory alloy by anodic oxidation. The oxide film was investigated by scanning electron microscopy （SEM）, X-ray diffractometry （XRD）, X-ray photoelectron spectrosocopy （XPS）. XRD analysis showed that oxide films formed by anodic oxidation was an amorphous phase and that the amorphous phase converted into anatase phase after hydrothermal treatment at 190℃ for 4 h. The bonding strength of oxide film to NiTi shape memory alloy substrate was measured by a modified ASTM C-633 method.

关 键 词：NITI形状记忆合金 表面改性 阳极氧化 二氧化钛 

分 类 号：TG333.17[金属学及工艺—金属压力加工]