| 镀钽TiNi形状记忆合金表面的XPS分析 |
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| 引用本文： | 成艳,蔡伟,李洪涛,郑玉峰,赵连城. 镀钽TiNi形状记忆合金表面的XPS分析[J]. 功能材料, 2004, 35(5): 558-559,562 |
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| 作者姓名： | 成艳 蔡伟 李洪涛 郑玉峰 赵连城 |
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| 作者单位： | 哈尔滨工业大学,材料科学与工程学院材料物理与化学系,黑龙江,哈尔滨,150001 |
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| 摘 要： | 采用多弧离子镀的方法在Ti 50.6%(原子分数)Ni形状记忆合金表面沉积了钽镀层。通过X射线光电子能谱(XPS)剖面分析发现TiNi合金表面钽镀层厚度均匀,并且在镀层与基体之间形成一薄层过渡层。将镀钽TiNi合金曝露于空气中后,通过XPS的全谱和高分辨谱图对其表面的成分和价态分析发现,镀钽层表面由于钽在空气中自然氧化形成了一层很薄的钽的氧化膜,最表面为高价钽的氧化物(Ta2O5),次表面为低价钽氧化物的混合物TaO2、TaO和TaOx(x<1)。
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| 关 键 词： | TiNi形状记忆合金 多弧离子镀 钽 镀层 |
| 文章编号： | 1001-9731(2004)05-0558-02 |
Effects of annealing treatment on the microstructure and heamocompatibility of TiNi alloys coated with Ta |
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| CHENG Yan,CAI Wei,LI Hong-tao,ZHENG Yu-feng,ZHAO Lian-cheng. Effects of annealing treatment on the microstructure and heamocompatibility of TiNi alloys coated with Ta[J]. Journal of Functional Materials, 2004, 35(5): 558-559,562 |
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| Authors: | CHENG Yan CAI Wei LI Hong-tao ZHENG Yu-feng ZHAO Lian-cheng |
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| Abstract: | Tantalum coating was obtained on the surface of Ti-50.6at% Ni shape memory alloy by multi-arc ion plating method. The depth profile was investigated by X-ray photoelectron spectroscopy (XPS), it has been found that a uniform tantalum coating was formed on the TiNi alloy with a thin interfere between TiNi substrate and tantalum coating. The surface chemical composition and chemical state of the tantalum coating were also investigated XPS survey and high resolution spectra. A thin oxide film with Ta_2O_5 in the outmost layer and tantalum suboxides in the inner layer, were formed on the surface of tantalum coating as a result of natural oxidation of Ta in atmosphere. |
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| Keywords: | TiNi shape memory alloy mult-arc ion plating corrosion Ta coatings |
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