Studies on wear rate and micro-hardness of the Al/Al2O3/Gr hybrid composites produced via powder metallurgy

Micro-structural characterization of the composites has revealed fairly uniform distribution and some amount of grain refinement in the specimens. Further, it was observed that the micro-hardness improve when increasing the milling time and the reinforcement content due to presence of hard Al2O3 par...

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Bibliographic Details
Published in:Composites. Part B, Engineering Engineering, 2015-02, Vol.69, p.603-611
Main Authors: Iacob, Gheorghe, Ghica, Valeriu Gabriel, Buzatu, Mihai, Buzatu, Traian, Petrescu, Mircea Ionuţ
Format: Article
Language:English
Subjects:
A. Metal–matrix composites (MMCs)
Aluminum
Aluminum oxide
B. Microstructures
B. Wear
E. Powder processing
Hybrid composites
Load bearing elements
Microhardness
Powder metallurgy
Reinforcement
Wear rate
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Summary:Micro-structural characterization of the composites has revealed fairly uniform distribution and some amount of grain refinement in the specimens. Further, it was observed that the micro-hardness improve when increasing the milling time and the reinforcement content due to presence of hard Al2O3 particles. Was also observed a low wear rate exhibited by the Al/Al2O3/Gr hybrid composites due to presence of Al2O3 and Gr which they acted as load bearing elements and solid lubricant respectively. The observed wear rate and micro-hardness have been correlated with microstructural analyses.
ISSN:1359-8368
1879-1069
DOI:10.1016/j.compositesb.2014.07.008