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采用盘销式摩擦磨损装置进行铜摩擦试验,研究在有、无磁场条件下磁流变液对界面表面的影响。在载荷为20~100N,转速为127~425r/min下旋转2h,进行一系列试验。摩擦因数和磨损率由磨损装置控制,采用扫描电子显微镜(SEM)观察磨损表面的微观组织。此外,采用X射线光谱(EDS)分析磨损表面的化学成分。结果显示,在有、无磁场条件下出现了不同的摩擦磨损系数和性能。同时,研究了载荷和转速对摩擦行为的影响。研究了在有磁场条件下的磨损表面形貌,发现在磨损表面明显存在磁流变颗粒,且脊塑流引起了侧向挤出,这表明磨料磨损是磁流变液的主要磨损机制。
The copper friction test was carried out with the disc-type friction and wear device to study the effect of MRF on the interface surface under the condition of magnetic field and non-magnetic field. In a load of 20 ~ 100N, speed of 127 ~ 425r / min rotation 2h, a series of tests. The friction factor and wear rate were controlled by a wear device, and the microstructure of the worn surface was observed with a scanning electron microscope (SEM). In addition, the chemical composition of the worn surface is analyzed by X-ray spectroscopy (EDS). The results show that with and without magnetic field, different friction and wear coefficients and properties appear. At the same time, the influence of load and speed on the friction behavior was studied. The wear surface morphology under magnetic field was studied. It is found that there are obviously magnetorheological particles on the wear surface, and the ridge plastic flow caused lateral extrusion. This indicates that abrasive wear is the main wear mechanism of MR fluid.