Microwave Sintering of Alumina-Silicon Carbide Nanocomposites
Densification behavior, microstructural developments and mechanical properties of 5 wt% SiC nano particulate toughened Al2O3 composites were prepared by using microwave sintering at different sintering temperatures. Densities of up to 97.5% of the theoretical value were achieved at temperature as low as 1380°C. Improvements in fracture toughness and bending strengths are of the order of 99% theoretical dense conventionally sintered composites. Surface heating was observed at the final stages of densification. No thermal runaway was observed in the nanocomposites due to presence of SiC spheroids.
Wei Pan and Jianghong Gong
K. Ahmad et al., "Microwave Sintering of Alumina-Silicon Carbide Nanocomposites", Key Engineering Materials, Vols. 336-338, pp. 1072-1075, 2007