pISSN: 1976-4251
eISSN: 2233-4998
About the Journal
Editorial Committee
Information for Authors
Associated Editors
Editorial Office
Current Issues
Article In Press
Search for Archives
Subject   Keyword   Abstract   Author  

CARBONLETT, vol. 26, no. 1, pp.51-60, 2018

DOI: DOI: http://dx.doi.org/10.5714/CL.2018.26.051

Surface modified rice husk ceramic particles as a functional additive: Improving the tribological behaviour of aluminium matrix composites

Lehua Cheng1, Dongrui Yu2, Enzhu Hu3,♠, Yuchao Tang3, Kunhong Hu3, Karl David Dearn4,♠, Xianguo Hu2, and Min Wang1

Affiliation: 1College of Chemical and Materials Engineering, Chaohu University , Hefei, 238000, PR. China
2Institute of Tribology, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, PR. China
3Department of Chemical and Materials Engineering, Hefei University, 99 Jinxiu Road, Hefei 230601, PR. China;4 Department of Mechanical Engineering, School of Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom

Abstract: An electroless deposition method was used to modify the surface properties of rice husk ceramic particles (RHC) by depositing nano-nickel on the surface of the RHC (Ni-RHC). The dry tribological performances of aluminum matrix composite adobes containing different contents of RHC and Ni-RHC particles have been investigated using a micro-tribometer. Results showed that the Ni-RHC particles substantially improved both the friction and wear properties of the Ni-RHC/aluminum matrix adobes. The optimal concentration was determined to be 15 wt% for both the RHC and Ni-RHC particles. The improvements in the tribological properties of aluminum adobes including the Ni-RHC were ascribed to frictioninduced peeling off of Ni coating and formation of protection layer on the wear zone, both of which led to low friction and wear volume.

Keyword: Rice husk, Engineering ceramics, Aluminum-matrix composite, Nickel coating