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考察了Al_(62)Cu_(25.5)Fe_(12.5)准晶磨料对紫铜、2024铝合金和304不锈钢3种软金属表面的研磨行为,从表面形貌、纳米硬度、碾抹系数、磨损量和电化学阻抗等方面与传统硬磨料(金刚石、Al_2O_3和SiO_2)进行对比.结果表明:经准晶磨料抛光的工件表面形貌与碾抹程度相关,碾抹系数越大,表面越平整,且碾抹系数与表面磨损率成反比.尤其需要指出的是,准晶磨料的这种“碾抹”特性可导致不锈钢表面产生硬化效应,硬度可提高约0.3 GPa.准晶磨料的碾抹特性还有利于2024铝合金表面生成高耐蚀能力的钝化膜.
The grinding behavior of Al 62 Cu 25.5 Fe 12.5 was studied on the surface of soft metals such as red copper, 2024 aluminum alloy and 304 stainless steel. The effects of surface morphology, nano hardness, wear coefficient, Electrochemical impedance and other aspects compared with the traditional hard abrasive (diamond, Al 2 O 3 and SiO 2) .The results show that the surface morphology of the workpiece polished by quasicrystal abrasive is related to the degree of grinding, the larger the coefficient of rolling, the more smooth the surface, In particular, the wipe coefficient is inversely proportional to the surface wear rate. In particular, it is important to note that this “creep” feature of quasicrystalline abrasives results in a hardened stainless steel surface with a hardness increase of about 0.3 GPa. Also conducive to the production of 2024 aluminum alloy surface corrosion resistance of the passivation film.