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采用压铸法制取了Al2O3-SiO2短纤维增强ZL109复合材料,并对其滑动磨损性能进行了研究。结果表明,纤维含量及分布规律是影响复合材料磨损性能的重要因素。随着纤维体积含量增加,复合材料的摩擦磨损性能提高;当纤维取向垂直于摩擦面时,复合材料的摩擦磨损性能比纤维平行于摩擦面取向要好。复合材料的磨损机制主要为氧化磨损和磨粒磨损,在较高载荷下特出现层高和剥落。
The Al2O3-SiO2 short fiber reinforced ZL109 composite was prepared by die-casting method, and its sliding wear property was studied. The results show that the fiber content and distribution are the important factors affecting the wear properties of composites. The friction and wear properties of the composites increase with the increase of fiber volume fraction. When the fiber orientation is perpendicular to the friction surface, the friction and wear properties of the composites are better than that of the fibers parallel to the friction surface. The wear mechanism of the composites is mainly oxidative wear and abrasive wear, peculiar to the layer height and peeling at higher loads.