Sintering Behavior of Mullite-Containing Materials

摘要

A sub 2 O sub 3 and SiO sub 3 were processed by powder and gel processes to form mullite-containing materials for sintering studies. The effects of phase composition, particle packing arrangement in the green compact, powder surface area, and sintering atmosphere on microstructural evolution and sintering kinetics (densification was observed when large amounts of liquid phase were present during sintering. In powder materials with composition near or within the mullite solid solution range, a proportionality was observed between the theoretical density and the logarithm of time for the various sintering temperatures. In gel materials, enhanced densification rates with increasing grinding times is observed. In sintering atmospheres, the total pressure and the partial pressure of oxygen were the important variables. (ERA citation 05:016185)