Studying the Effect of Sintering and Porosity on Electrical Conductivity of Composite Materials

Muthanna Journal of Pure Sciences – MJPS

Vol.3 – No. 2 / October 2016

Assistant Lecturer Manal F. Hasan
Technical College / Baghdad

Abstract

This research was carried out to study the effect of sintering temperature and porosity on the electrical conductivity of metal matrix composites. Aluminium powder was reinforced with ceramic particles alumina and silicon carbide using fixed weight fraction (10%) and deferent grain sizes. The specimens were prepared by hydraulic press after that the specimens fired at deferent sintering temperatures. The results show the electrical conductivity was increased with increasing sintering temperatures and time and the highest value of electrical conductivity at 5000C and six hours for Al-SiC composites. While the electrical conductivity of the composite decreases by increasing the AL2O3 and SiC porosity that the lowest value of electrical conductivity at 125μ for Alumina particles.
Key word: aluminium, Alumina, silicon carbide, electrical conductivity &composite materials

 

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