纳米球形WS_2颗粒对PTFE基固体润滑粘结干膜的改性研究  

Study on the PTFE-based Bonded Solid Lubrication Films Modified by Nano WS_2 Particles

作　　者：赵云平[1] 温庆平[1] 胡继星 郑军[1] 

机构地区：[1]兰州物理研究所,甘肃兰州730000

出　　处：《润滑与密封》2008年第1期63-67,共5页Lubrication Engineering

摘　　要：在PTFE基膜系中加入适当比例的纳米球形WS2颗粒,获得了不同性能的固体润滑粘结干膜,通过对膜层显微硬度、膜层附着力以及摩擦学性能的测试,筛选出一种性能较优的膜系。结果表明:在PTFE基膜系中增加适当比例的纳米WS2球,可以有效地减小膜层的磨损率,提高膜层的耐磨损寿命;但是当纳米WS2球添加比例较高时,未能充分分散的纳米球团聚体可能增加膜系中的磨粒磨损效应,使得膜层的摩擦因数波动变大,膜层的磨损率也增大,从而降低膜层的耐磨损寿命。通过不同应力条件下的寿命试验,初步建立了该种膜系的摩擦寿命模型,可用于预测该膜层在使用条件下的寿命或开展加速寿命试验。The PTFE-based bonded solid lubrication films with different performance were obtained through optimal addition of nano WS2 sphere particles.The microhardness,adhesive strength and tribological properties of WS2-modified PTFE films were investigated in order to obtain the targeted films with good performance.Results show that optimum addition of WS2 particles in the PTFE-based films could effectively decrease the wear rate and consequently improve the wear life of films.While higher content addition of WS2 ...

关 键 词：纳米WS_2颗粒 PTFE 固体润滑粘结干膜 摩擦学性能 

分 类 号：TB381[一般工业技术—材料科学与工程]