(1. 浙江大學(xué) 材料科學(xué)與工程系， 杭州 310027；
2. 浙江大學(xué) 硅材料國(guó)家重點(diǎn)實(shí)驗(yàn)室，杭州 310027)
摘 要: 利用銷(xiāo)盤(pán)式磨損試驗(yàn)機(jī)研究了粉末冶金法制備的多壁納米碳管/Cu基復(fù)合材料的穩(wěn)態(tài)摩擦磨損行為，并用掃描電鏡分析了復(fù)合材料的磨損形貌。結(jié)果表明：多壁納米碳管/Cu基復(fù)合材料具有較小的摩擦系數(shù)，并隨納米碳管質(zhì)量分?jǐn)?shù)的增加而逐漸降低；由于復(fù)合材料中納米碳管的增強(qiáng)和減摩作用，在低載荷和中等載荷作用下，隨著納米碳管質(zhì)量分?jǐn)?shù)的增加，復(fù)合材料的磨損率減小；而在高載荷作用下，由于發(fā)生表面開(kāi)裂和片狀層剝落，含納米碳管質(zhì)量分?jǐn)?shù)高的復(fù)合材料的磨損率增高。
關(guān)鍵字: 多壁納米碳管； 金屬基復(fù)合材料； 摩擦系數(shù)； 磨損率
nanotube/Cu matrix composites
ZHANG Xiao-bin1, CHEN Wei-xiang1, LU Huanming2
（1. Department of Materials Science and Engineering,
Zhejiang University, Hangzhou 310027, P.R.China;
2. State Key Laboratory of Silicon Materials,
Zhejiang University, Hangzhou 310027, P.R.China）
Abstract:The friction and wear behavior of multi-walled carbon nanotube/Cu matrix composites fabricated by powder metallurgy were investigated using a pin-on-disk test rig under steady-state conditions and the worn surfaces were analyzed by scanning electron microscopy (SEM). The experimental results indicated that the coefficients of friction for the composites are low and decreased with the carbon nanotube content increasing. At lower and intermediate loads, the wear rate of the composites decreases with increasing the carbon nanotube content due to the effect of reinforcement and reduced friction. Because the surface fracture and fragment of the flake layer occur at higher load, the composites with high carbon nanotube content exhibit reduced wear resistance.
Key words: multi-walled carbon nanotube; metal matrix composite; coefficient of friction; wear rate
