(1. 西北矿冶研究院， 白银 730900；
2. 中国科学院 兰州化学物理研究所
固体润滑国家重点实验室， 兰州 730000；
3. 北京航空航天大学 理学院， 北京100083)
摘 要: 采用X射线衍射、 扫描电镜和电化学腐蚀等技术研究了3种不同束流密度的强脉冲离子束辐照对Ni3Al合金表面形貌与物相及电化学腐蚀性能的影响。 结果表明： IPIB辐照时， 试样最外表面的温度远超过Ni3Al合金的熔点， 造成试样表面融化，从而清洁和抛光试样表面； 随离子束流密度的增加， Ni3Al合金表面的物相呈现规律性的变化，分别产生形变织构、 部分非晶及新相， 使Ni3Al合金的抗电化学腐蚀性能得以提高。
关键字: Ni3Al合金； 强脉冲离子束辐照； 织构； 电化学腐蚀性能
（1. Northwest Institute of Mine & Metallurgy, Baiyin 730900, China;
2. State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000,
China;3. School of Science, Beijing University of Aeronautics & Astronautics, Beijing 100083, China）
Abstract:The effects of intense pulsed ion beams (IPIB) irradiation on surface morphology, phase evolution and the property of electrochemical corrosion for Ni3Al alloy were studied through X-ray diffraction, scanning electron microscopy and electrochemical corrosion test. It is found that the temperature of out-most surface of targets greatly exceeds the melting point of Ni3Al alloy during IPIB irradiation, which makes the surface layer melt, cleaned and polished. The phase states of surface layer of Ni3Al alloy show a regular response to the current density of IPIB. The deformation texture, minor amorphous and new phase appear with the increase of current density of IPIB. And the electrochemical corrosion resistance of Ni3Al alloy could be improved by IPIB irradiation.
Key words: Ni3Al alloy; intense pulsed ion beams irradiation; texture; electrochemical corrosion resistance
