Tribological characteristics of self-lubricating nanostructured aluminum reinforced with multi-wall CNTs processed by flake powder metallurgy and hot pressing method

被引：21

作者：

Akbarpour, M. R. ^{[1
]}

Alipour, S. ^{[2
]}

Najafi, M. ^{[1
]}

机构：

[1] Univ Maragheh, Dept Mat Engn, Fac Engn, POB 14155-4777, Maragheh, Iran

[2] Sharif Univ Technol, Dept Mat Sci & Engn, POB 11365-9466,Azadi Ave, Tehran, Iran

来源：

关键词：

Metal matrix composites; Carbon nanotube; Flake powder metallurgy; Wear; Aluminum; CARBON NANOTUBES; MATRIX COMPOSITES; WEAR BEHAVIOR; FRICTION; MICROSTRUCTURE; NANOPARTICLES;

D O I：

10.1016/j.diamond.2018.10.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ultrafine-grained Al-CNT (2 and 4 vol%) composites were successfully fabricated using the flake powder metallurgy and hot pressing route, and the microstructure and tribological properties of the produced composites were studied. The results showed that the coefficient of friction and the wear rate of Al decrease with the addition of the CNT reinforcement. A carbon-rich film was formed on the worn surfaces during wear test, which prevented the Al oxidation and yielded the self-lubricating effect for the composites. This improvement in the wear behavior of the composites can be attributed to the simultaneous effects of the ultrafine-grained matrix and strengthening and self-lubricating properties of the uniformly dispersed and undamaged CNT in the flake powder metallurgy method.

引用

页码：93 / 100

页数：8

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