学术
石墨结构层包覆铜纳米粒子的摩擦磨损性能研究
宾晓蓓[1] 陈加藏[2] 曹宏[2] 刘洪波[3] 涂文懋[1]
[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]武汉工程大学材料科学与工程学院,湖北武汉430074 [3]湖南大学材料科学与工程学院,湖南长沙410082
摘 要:
在硼氢化钠／乙二胺体系中还原一阶CuCl2石墨层间化合物前驱体制备石墨结构层包覆铜纳米粒子复合材料（GECNP），采用MQ-800型四球摩擦磨损试验机和XP型销-盘摩擦磨损试验机测定GECNP作为润滑油添加剂的摩擦磨损性能，采用扫描电子显微镜观察磨损表面形貌，采用X射线能量色散谱仪分析磨损表面元素组成．结果表明，GECNP的鳞片厚度为几十纳米，直径≤5μm．GECNP添加剂可以提高润滑油的承载能力，降低其摩擦系数，提高耐磨性．在载荷1667N下，当GECNP质量分数为3％时，其摩擦系数和磨斑直径达到最小值，并且在摩擦副表面检测出铜元素沉积，形成了磨损自修复层．[著者文摘]
文章出处:
《摩擦学学报》-2008年28卷1期 -23-27页
栏目信息:
文献标识码:
A
文章编号:
1004-0595（2008）01-0023-05
Friction and Wear Behavior of Graphene Encapsulated Copper Nanoparticles
BIN Xiao-bei,CHEN Jia-zang , CA0 Hong, LIU Hong-bo ,TU Wen-mao （ 1. School of Resource and Environment, Wuhan University of technology, Wuhan 430070, China ; 2. School of Material Science and Engineering, Wuhan Institute of Technology, Wuhan 430074, China; 3. School of Material Science and engineering, Hunan University, Changsha 410082, China）
Abstract:
Graphene encapsulated copper nanoparticles （GECNP） were synthesized by reduction of graphite intercalation compounds of CuCl2 with stage 1 structure in sodium borohydride/ethylenediamine solution. The flakes of GECNP are of only several tens nanometers in thickness and of less than 5 μm in diameter. The friction and wear behavior of GECNP employed as lubrication additive were characterized by using a four-balls friction and wear tester of type MQ-800 and a pin-plate friction and wear tester of type XP, and the topograph of worn surface was observed by using a JSM5510LV scanning electron microscopy （SEM） , and the chemical composition of worn surface was analyzed by using a X-ray energy dispersion spectrometer. GECNP additive increased the carrying capacity of lubricating oil obviously, and it decreased the frictional coefficient and enhanced the anti-wear properties. When the content of GECNP was 3% and the loading was 1667 N, there were minimum frictional coefficient and wear-scar diameter. Copper element was examined on the wear-scar by EDS at the same condition, it was inferred that a self compensation layer was formed during wear process.[著者文摘]
Key words:
graphite, encapsulated, nano-copper, friction and wear behavior
基金资助:
湖北省自然科学基金资助项目（2004ABA090）.
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