摘要
对挤压铸造制成的飞灰颗粒增强ZL109复合材料在不同条件下的摩擦磨损特性进行了研究。研究结果表明:在较低载荷和较低滑动速度下,该复合材料的耐磨性明显优越于基体铝合金,摩擦系数也稳定地低于基体铝合金,并且随飞灰含量的增加复合材料的耐磨性有所提高;在较高载荷和较高滑动速度下,同基体铝合金相比复合材料耐磨性的改善程度有所降低,但复合材料的摩擦系数仍可以保持较低的水平。这是由于随着载荷和滑动速度的变化,复合材料的磨损机制发生了转化。本文对该过程中的磨损机制的转化进行了初步分析。
The friction and wear behaviors of fly ash particles reinforced ZL109 composites prepared by the squeeze-casting method were investigated under various conditions. Under the lower loads and at the lower sliding speeds, the wear resistance of the MMCs is superior evidently to that of the Al matrix, and increases with the increase of the volume fraction of fly ash particles. The friction coefficient is steadily lower than that of Al matrix. The improvement of the wear resistance of the MMCs decreases under the higher loads and at the higher sliding speeds as compared with Al matrix. But the friction coefficient of the MMCs could still keep a lower value. The reason is that the wear mechanisms in the MMCs have been transformed with the increase of load and sliding speed. The transformation of wear mechanisms in MMCs was also investigated in the paper.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2003年第6期26-30,共5页
Acta Materiae Compositae Sinica
关键词
铝基复合材料
飞灰颗粒
耐磨性
磨损机制
Aluminum
Casting
Composite materials
Fly ash
Friction
Wear resistance
