Authors : Sadeer Muwafaq Majeed and Huda Jabber Abd Al-Hussien
Abstract: In this research preparation pours silicon carbide by addition saw dust in different percentage (1, 3, 5, 7) wt.% to the SiC matrix by using cold isoststic press technique, then the sintering temperature was 1250°C, polyester polymer and glass powder was added to the composites as binder and to assist lowering the sintering temperature. Then make the tests of measurement the density, porosity, vickers hardness, thermal conductivity and scanning electron microscopy. The apparent density increase with the saw dust at 5 and 7 wt.% it showed the retention of small pore sizes and fine particles. The porosity was in range of 33-48% it increased with the saw dust ratio, sintering temperature within 1250°C and with present polyester as binder addition. The hardness decreases with increase porosity in the samples. Thermal conductivity decrease with increase the saw dust ratio. SEM result show that, the microstructure were seen to be improving to the pours silicon carbide grains surrounded by a glassy-rich phase.
Sadeer Muwafaq Majeed and Huda Jabber Abd Al-Hussien, 2017. Preparation Silicon Carbide Pours and Studies their Characterization. Journal of Engineering and Applied Sciences, 12: 7919-7924.