【摘要】 在MRH-03型环-块摩擦试验机上,在不同转速、载荷下对不同纤维取向的"飞龙"材料以及饱和吸水后的材料在纯水和人工海水下的摩擦性能进行研究。结果表明:不同纤维取向的"飞龙"材料具有不同的摩擦特性,摩擦方向垂直于单张纤维布时摩擦因数最大,而磨损率最低,摩擦位于单张纤维布上时摩擦因数最小而磨损率最大;随着转速增加,摩擦因数和磨损率均有所降低;随着载荷增加,纯水润滑时磨损率增大,海水润滑时磨损率无明显变化;饱和吸水后,材料的摩擦因数和磨损率,纯水润滑条件下降低,海水润滑条件下增大。SEM形貌分析表明,飞龙材料的磨损行为受到纤维对基体材料的支撑作用和基体材料对纤维的保护作用协同影响。更多还原

【Abstract】 The tribology behaviors of Feroform composites with different directions of woven synthetic fiber cloth,and the materials saturated with water absorption were studied by using a block-on-ring friction test rig of MRH-03 under pure water and artificial sea water lubrication,and at different load and speed.The results show that the Feroform composites with three directions of woven synthetic fiber cloth have different frictional behaviors. When the sliding direction perpendicular to the single sheet of cloth,the friction coefficient is at the highest,and the specific wear rate is the lowest.When the sliding direction is on the single sheet of cloth,the friction coefficient is at the lowest and the specific wear rate is the highest.With the increasing of the rotating speed,the friction coefficient and the specific wear rates of the materials are all decreased.With the increasing of the load,the specific wear rate is increased under pure water lubrication,but no obvious change under sea water lubrication.After saturated with water absorption,the friction coefficient and the specific wear rate of the materials are decreased under pure water lubrication and increased under sea water lubrication.The worn surfaces of Feroform composites were analyzed by scanning electron microscope( SEM). The results indicate that the friction mechanism of the composites is affected synergistically by the supporting function of the fiber on substrate material and the protection of substrate material on fiber.更多还原