Influence of processing on the microstructural development and flexure strength of Al_2O_3/SiC Nanocomposites

摘要

Alumina/10 wt/100 SiC namocomposities were prepared by using a number of processing techniques, in order to produce different microstructures while keeping a uniform distribution of the SiC particles in the alumina matrix. Basically, this study used three techniques, i.e. mechanical mixture of powders, the use of an inorganic precursor for alu- mina precipitated onto SiC particles ad the use of different polymeric precursors for SiC precipitated on alumina particles. Hot pressing at 1700 deg.C was necessary to produce fully dense nanocomposites.