Abstract

ANDRADE-TACCA, Cesar A.; VELIZ LLAYQUI, Nemesio Edgar  and  MEDINA-CACERES, Carlos F.. Analysis of hardness and resistance to the traction of an Ai-SiO₂ metal matrix composite, using alugminum cans and rice hulls as raw material. Rev. Bol. Quim [online]. 2019, vol.36, n.2, pp.60-72. ISSN 0250-5460.

Abstract In the present investigation we have developed a metal matrix composite material (MCMM) of aluminum reinforced with rice husk ash particles (RHA).. The MCMM, with 2.5% amorphous silica, 5% in weight (volume), were manufactured from aluminum waste, specifically cans, and amorphous silica particles (less than 1mm) obtained from burning rice husk (RH). The manufacturing process was based on fusion metallurgy, a direct mixing process for composite materials (CM). In this regard, the mechanical properties of the matrix made from the can were determined, comparing them with the results of the mechanical tests of hardness and tensile strength obtained from the new MCMM.. In addition, it was determined that higher concentrations of amorphous silica in the matrix increased the hardness of the alloys, while a higher level of amorphous silica decreased elongation.

Keywords : Composite material; Aluminum; Rice hulls; Mechanical properties; Direct mixture.

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