SYNTHESIS OF AL-FLY ASH COMPOSITE BY STIR CASTING TECHNIQUE
Keywords:
Stir casting technique, Fly ash, Agglomeration, PorosityAbstract
In this paper stir casting technique has been used to process Al-fly ash composite. This paper also includes problems encountered during the processing of Al-fly ash composite. To process Al-fly ash composite, fly ash particles less than 90 µm size were added 8 weight percentage of aluminum(>99% pure) in molten aluminum and mixed using mechanical stirrer. Fly ash addition not only makes aluminium harder, stronger, stiffer and more wear resistant but also saves energy consumption and helps in cutting down green house emissions by utilizing almost freely available fly ash which is a waste of thermal power plant and problematic to dispose off. But sometimes agglomeration of ash particles and porosity occurs readily during the composite manufacturing, leading to inferior mechanical properties of composite.
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