Effect of green density on the subsequent densification and grain growth of uitrafine SnO_2 powder during isochrional sintering

摘要

An ultrafine powder of SnO_2 has been synthesized by a gas flow condensation method. The average particle size of the powder was about 40 nm. The effect of the green density on the subsequent densification and grain growth of the ultra- fine SnO_2 during sintering has been studied. A loose green compact consolidated under 500 Mpa (green MC) showed rapid densification as well as rapid grain growth at rela- tively low sintering temperatures.