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Characterization of Al matrix composites reinforced with alumina nanoparticles obtained by PM method

V. TSAKIRIS1, W. KAPPEL1, E. ENESCU1, G. ALECU1,* , F. ALBU1, F. GRIGORE1, V. MARINESCU1, M. LUNGU1

Affiliation

  1. National Institute for Research and Development in Electrical Engineering ICPE-CA, Splaiul Unirii 313, Bucharest, Romania

Abstract

Al-Al2O3 metal matrix composite powders with 2%vol.Al2O3 nanoparticles were synthesized by high-energy milling of the blended component powders and consolidated via traditional powder metallurgy (PM) route. The evaluation of the milling time from 2 h until 8 h on the microstructures, electrical and mechanical properties was analyzed. Mechanical properties like: hardness, strength and ductility were determined on the specimens with high densification obtained by hot extrusion. The optimum milling time which assured uniform distribution of nano-size alumina particles in the aluminum matrix and best values for the mechanical properties was emphasized..

Keywords

Nanometric particles, Aluminum composites, PM method.

Submitted at: June 14, 2011
Accepted at: Sept. 15, 2011

Citation

V. TSAKIRIS, W. KAPPEL, E. ENESCU, G. ALECU, F. ALBU, F. GRIGORE, V. MARINESCU, M. LUNGU, Characterization of Al matrix composites reinforced with alumina nanoparticles obtained by PM method, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 9, pp. 1172-1175 (2011)