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The Elaboration of Composite Materials from the Cu-Al2O3 System Using CuO and Al2O3 Powders

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Abstract:

The main objective of this study is to find out a simple method to ensure a good dispersion of Al2O3 in the Cu matrix. The method should avoid the segregation effect due to the high difference of the densities of Cu (8.93 g/cm3) and Al2O3 (3.96 g/cm3). In the process of obtaining of the Cu-Al2O3 composite we have considered starting with a material whose density is closer to the density of Al2O3. We have chosen CuO whose density is about 6 g/cm3 so the composite material was obtained starting with copper oxide and alumina powder. We have studied the influence of Al2O3 content and of the compacting pressure upon material’s compactness and hardness. The dispersion finer is highlighted by the microstructure of the surfaces.

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Periodical:

Advanced Materials Research (Volume 23)

Pages:

83-86

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.23.83

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Online since:

October 2007

Authors:

Dana Salomie, Codruta Pavel, Radu Mureşan

Keywords:

Cu-Al2O3, Dispersion-Strengthened Composites

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] A.V. Nadkarni, J. E Synk,.: Cerments. Dispersion-Strengthened Materials. Metals Handbook. Ninth ed., Vol. 7 - Powder Metallurgy, (1984), pp.710-717.

Google Scholar

[2] J. D Troxell: Cuivre renforce la dispersion d'oxyde d'aluminium. Materiaux et Techniques. No 6- 7, (1993), pp.61-64.

Google Scholar

[3] E. Moldovan, D. Salomie: Raport Cercetare Contract 3003/94 C9: Cercetări privind obţinerea unor materiale compozite metal - oxid metalic prin presare izostatică. Cluj, (1994).

Google Scholar

[4] M.S. Motta, et. al. - Complementary Microscopy Techniques Applied to the Characterization of CuAl2O3 Nanocomposites, in Current Issues on Multidisciplinary Microscopy Research and Education, 2006, ISBN (13): 978-84-609-6605-4, p.215.

Google Scholar

[5] A.V. Nadkarni - High conductivity Copper and Aluminum Alloys, E. Ling and P.W. Taubenblat (eds. ), The Metallurgical of AIME, Warrendale, PA, 1984, p.77.

Google Scholar