纯钛表面微弧氧化膜纳米压入法研究

材料科学与工艺, 2002, 10(2): 113-116. doi: 10.3969/j.issn.1005-0299.2002.02.001

纯钛表面微弧氧化膜纳米压入法研究

薛文斌 ^1, , 王超 ^2, , 李永良 ^3, , 陈如意 ^4,

1.北京师范大学低能核物理研究所射线束材料工程开放实验室,北京,100875

2.北京师范大学低能核物理研究所射线束材料工程开放实验室,北京,100875

3.北京师范大学低能核物理研究所射线束材料工程开放实验室,北京,100875

4.北京师范大学低能核物理研究所射线束材料工程开放实验室,北京,100875

基金项目: 国家自然科学基金(59801003) 国家高技术研究发展计划(863计划)(863-715-011-020) 北京市科技新星计划项目(9558102500)

关键词：微弧氧化 , 纯钛 , 纳米压入法

Nanoindentation of microarc oxidation coatings on pure titanium

微弧氧化是一项较新的等离子体化学-电化学成膜技术,硬度和弹性模量是膜的基本微区力学性能.采用交流微弧氧化方法在铝酸盐溶液中在TA2纯钛表面制备出较厚的氧化膜,利用纳米压入法测定了膜的硬度和弹性模量,并探讨了微弧放电对氧化膜相组成和性能的影响.研究结果表明:膜的显微硬度和弹性模量分布有相似的变化规律,从膜表层到膜内部,硬度和弹性模量逐渐增加,并在内层膜达到最大值,分别为9.78 GPa和176 GPa,比钛基体高的多;膜不同深度处TiO1金红石和TiAl2O5相的相对含量变化决定了硬度和弹性模量的分布.

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