(1. 西北礦冶研究院， 白銀 730900；
2. 中國科學(xué)院 蘭州化學(xué)物理研究所
固體潤滑國家重點(diǎn)實(shí)驗(yàn)室， 蘭州 730000；
3. 北京航空航天大學(xué) 理學(xué)院， 北京100083)
摘 要: 采用X射線衍射、 掃描電鏡和電化學(xué)腐蝕等技術(shù)研究了3種不同束流密度的強(qiáng)脈沖離子束輻照對Ni3Al合金表面形貌與物相及電化學(xué)腐蝕性能的影響。 結(jié)果表明： IPIB輻照時(shí)， 試樣最外表面的溫度遠(yuǎn)超過Ni3Al合金的熔點(diǎn)， 造成試樣表面融化，從而清潔和拋光試樣表面； 隨離子束流密度的增加， Ni3Al合金表面的物相呈現(xiàn)規(guī)律性的變化，分別產(chǎn)生形變織構(gòu)、 部分非晶及新相， 使Ni3Al合金的抗電化學(xué)腐蝕性能得以提高。
關(guān)鍵字: Ni3Al合金； 強(qiáng)脈沖離子束輻照； 織構(gòu)； 電化學(xué)腐蝕性能
（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
