Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 14    No. 5    October 2004

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Preparation of Ni-CNT composite coatings on aluminum substrate and its friction and wear behavior
TU Jiang-ping(涂江平)1, ZHU Li-ping(朱丽萍)1
CHEN Wei-xiang(陈卫祥)2, ZHAO Xin-bing(赵新兵)1,
 LIU Fu(刘  芙)1, ZHANG Xiao

1. Department of Materials Science and Engineering, 
Zhejiang University, Hangzhou 310027, China;
2. Department of Chemistry, Zhejiang University, 
Hangzhou 310027, China

Abstract:Nickel-carbon nanotube(CNT) composite coatings with a Zn-Ni interlayer were prepared by electrodeposition technique on aluminum substrate. The effects of CNT concentration in plating bath on the volume fraction of CNTs in the deposits and the coating growth rate were investigated. The friction and wear behavior of the Ni-CNT composite coatings were examined using a pin-on-disk wear tester under dry sliding conditions at a sliding speed of 0.062 3 m/s and load range from 12 N to 150 N. Because of the reinforcement of CNTs in the composite coatings, at lower applied loads, the wear resistance was improved with increasing volume fraction of CNTs. Since cracking and peeling occur on the worn surface, the wear rates of composite coatings with high volume fraction of CNTs increase rapidly at higher applied loads. The friction coefficient of the composite coatings decreases with the increasing volume fraction of CNTs due to the reinforcement and self-lubrication of CNTs.

 

Key words: carbon nanotubes (CNTs); composite coating; electrodeposition; friction and wear

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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