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The Effect Composition of Reinforcement SiC Whiskers and Al2O3 Particulates on Characteristics of Aluminum Matrix Composite

Dr.Ir. I Kt Suarsana, MT., I Kt Suarsana (2013) The Effect Composition of Reinforcement SiC Whiskers and Al2O3 Particulates on Characteristics of Aluminum Matrix Composite. Australian Journal of Basic and Applied Sciences, 14. ISSN 1991-8178

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Abstract

Abstract In the present investigation fine aluminum powder was selected as the matrix, and Carbon Silicon whiskers (SiCw) together with Alumina particles (Al2O3p) were used as reinforcement. The composite was formed under 25 kN pressure over 15 minutes holding time for each specimen. The characteristics tests included those for density, porosity, hardness and SEM. The results showed that the addition of the combined SiCw and Al2O3p reinforcements resulted in a decrease in density and an increase in porosity. However, it was the addition of the Al2O3p reinforcement itself which gave rise to the increase in hardness. The main cause of this was that the Al2O3 particles were smaller than those the aluminum matrix so could spread easily through it giving a good bond. While the SiCw in the form of fibres contributed to making it more porous. In this case the addition of Al2O3p itself had an effect on composite hardness. In the sintering process, extending holding time caused the highest increase in hardness at temperatures of 550oC with a holding time of 6 hours.

Item Type: Article
Uncontrolled Keywords: -
Subjects: L Education > L Education (General)
Divisions: Faculty of Law, Arts and Social Sciences > School of Education
Depositing User: Mr. Repository Admin
Date Deposited: 07 Jun 2016 21:58
Last Modified: 21 Jun 2016 05:58
URI: http://erepo.unud.ac.id/id/eprint/3888

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