(1. 大连理工大学 材料与工程学院，大连 1160242. 大连理工大学 物理与光电工程学院，大连 1160243. 大连理工大学 三束材料改性教育部重点实验室，大连 116024)
摘 要: 由非自耗电弧熔法制备Al62Cu25.5Fe12.5单相准晶合金，再将该合金进行球磨处理制备了Al62Cu25.5Fe12.5二十面体准晶粉末，并以其为磨料配制研磨膏，对软金属Al进行表面研磨处理。结果表明：经准晶研磨处理后的纯Al表面平整无划痕，粗糙度为Ra=0.306，达到一般精研要求。与传统金刚石磨料不同，这种准晶研磨材料在机械研磨时可避免造成对软金属表面的二次划伤，且表现出对软金属基体表面缺陷的修复能力。
关键字: Al62Cu25.5Fe12.5准晶; 磨料; 修复效应
（1. School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China;2. School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, China;3. Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education,Dalian University of Technology, Dalian 116024, China）
Abstract:Al62Cu25.5Fe12.5 icosahedral quasicrystal (IQC) single-phase alloy was prepared by non-consumed electric arc melting method, then the Al62Cu25.5Fe12.5 IQC powders were obtained by treating the single-phase alloy with ball mill. The ball-milled Al62Cu25.5Fe12.5 IQC powders were used to make a ploshing agent with appropriate ratios with other ingredients. The polishing experiments were done on industrial pure Al. The results show that, after polishing, the sample surface reaches a good roughness of Ra=0.306, and no fatal scratch marks are oberved on it. The general requirement of precise surface grinding is met. Comparing with commercial diamond grinding agents, the surface seondary scratch is avoided, and easpecially, the new grinding material is found to deliver a ‘repairing’ effect on the marcoscopic surafce defects of pure Al.
Key words: Al62Cu25.5Fe12.5 quasicrystals; grinding material; repairing effect
