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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/1696

Title: Synthesis and characterization of copper–alumina metal matrix composite by conventional and spark plasma sintering
Authors: Dash, K
Ray, B C
Chaira, D
Keywords: Cu–Al2O3
Metal matrix composite
Conventional sintering
Spark plasma sintering
Issue Date: Dec-2011
Publisher: Elsevier B.V.
Citation: Journal of Alloys and Compounds 516 (2012) 78– 84
Abstract: The evolution of microstructure, density and hardness of Cu–Al2O3 metal matrix composites with different techniques of sintering have been demonstrated here. The effect of sintering atmosphere on the interfacial compatibility of matrix and reinforcement has also been discussed. Synthesis of microcomposites was carried out by reinforcing 5, 10 and 15 vol.% of alumina powder particles (average size ∼5.71 m) in copper matrix via conventional sintering using N2, H2 and Ar atmospheres. Nanocomposites of 1, 5, 7 vol.% alumina (average size <50 nm) reinforced in copper matrix were fabricated by powder metallurgy route using spark plasma sintering technique. These micro- and nano-composites have been characterized by X-ray diffraction and scanning electron microscopy followed by density and hardness measurements. Cu–Al2O3 metal matrix micro- and nanocomposites fabricated by conventional and spark plasma sintering routes were studied and compared. Maximum Vickers hardness of 60, 75 and 80 w...
Description: Copyright for this paper belongs to Elsevier B.V.
URI: http://doi.dx.org/10.1016/j.jallcom.2011.11.136
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