Using Al, Al2O3 and SiC, different types of composites have been prepared in this experiment. Green compacts of Al composites were made at a compressing load of 1 ton and 2 ton respectively. These compacts were sintered at two different sintering temperatures of 400 °C and 450 °C in an oxygen free environment using muffle furnace for one hour followed by annealing process which took 12 hours. Sintered compacts were then sintered to micro-structural examination and mechanical properties evaluation. Higher hardness has been attained for the composites containing 2.5% SiC. Attempts have been made to describe the influence of sintering temperature on the microstructure and properties of Al-Al2O3-SiC composites. Samples are prepared of 100% Al, 97.5% Al- 2.5% Al2O3, 92.5% Al - 7.5% Al2O3, 95% Al - 2.5% Al2O3 – 2.5% SiC, 92.5% Al - 5% Al2O3 – 2.5% SiC, 95% Al – 5% Al2O3. The main objective of this experiment is to determine the factors that can increase hardness of Al composites.
Sintering, weighing, blending and composites
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