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应用飞秒激光在NiTi合金表面制备多孔微结构 被引量:3

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摘要 通过恒速移动线偏振飞秒激光焦点在镍-钛(NiTi)合金表面制备出了多孔微结构.实验结果表明,通过逐步改变入射的激光能量,在样品表面可以形成羽毛状条纹和簇状多孔等多种不同的新颖微结构.当激光能量为400μJ时,实验观测到了规则空间排列的多孔微细结构.X射线衍射(XRD)分析表明,样品经不同能量的飞秒激光加工后,样品表面仍然可以保持其原始的晶体结构,但表面晶粒已明显被细化.X射线光电子能谱(XPS)显示,飞秒激光处理后样品表面的Ni/Ti比值也发生了显著变化,且Ni的氧化明显.当激光能量为400μJ时,加工表面的成分被证实主要由二氧化钛和少量被氧化的Ni组成.
出处 《科学通报》 EI CAS CSCD 北大核心 2008年第1期61-65,共5页 Chinese Science Bulletin
基金 国家自然科学基金(批准号:50471048) 高等学校博士学科点专项科研基金(批准号:20040056016)资助项目
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参考文献22

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