基于羰基铁磁流变液的摩擦磨损性能研究

Tribological properties of carbonyl iron-based magnetorheological fluid

采用四球摩擦磨损试验机考察了负荷和转速对某种实用型羰基铁磁流变液的摩擦系数和磨斑直径的影响，测定了磁流变液的最大无卡咬负荷PB和烧结负荷PD，用扫描电子显微镜观察了磨痕表面形貌，探讨了磁流变液的摩擦磨损特性。结果表明，磁流变液的摩擦磨损性能随负荷和转速的增大而增加。负荷的高低决定磨粒磨损的机理，而转速的大小决定同种机理下磨粒磨损的程度。低负荷下为微观切削，高负荷下为粘着磨损和疲劳磨损。该磁流变液的PB和PD值分别为294N和1569N。

The tribologocal behavior of Carbonyl Iron-based magnetorheological fliud was investigated on a four-ball machine, the influence of load and rotate speed on fraction coefficient and wear scar dismeter was discussed, the mephology of the wear steel surfaces lubricated with MRF at diffent load and rotate speed were observed on a SEM. It was found that fraction coefficient and wear scar dismeter were increased with increasing of load and rotate speed. The wear mechanism of MRF represent groove wear of particle in lower load, showed adhesive and fatigue wear at higher load. The PB and PD of the MRF are 294N and 1569N, respectively.