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eISSN: 2233-4998
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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