Tribological Behaviour of Surface Modified Copper Nanoparticles as lubricating Additives
A special kind of surface modified copper nanoparticles was selected as lubricating additives to in situ generate the auto-reconditioning copperized protective film on iron-base metal surfaces under designed tribological conditions. The morphologies and element distributions of the formed film were observed and determined by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS). The micro mechanical properties and tribological behaviors were investigated by nano test system and ball-on-disc tribotester. The results show that the morphology of the nano copper protective film is smooth, the nano-hardness decreases by 46％ and the friction coefficient of the copperized protective film is about 0.10. The forming mechanism of the nano copper reconditioning film can be described that the copper nanoparticles deposit on the worn surfaces and form iron-copper alloy film with lower hardness and shear strength, which has better friction-reducing, antiwear and surface-optimizing behaviors.
Copper Nanoparticles Surface Modified Tribological Behaviour
Shi Peijing Yu Helong Wang Hongmei Xu Binshi
National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China
国际会议
北京
英文
806-809
2012-10-23（万方平台首次上网日期，不代表论文的发表时间）