超高真空中破壊時に高純度アルミナから放出される極微量ガスの分析 : ガス放出挙動に及ぼす焼結雰囲気, 焼結時間の影響

概要

論文の詳細を見る
The effects of sintering atmosphere and sintering time on gas emission behavior during fracture of high-purity Al_2O_3 were investigated under ultrahigh vacuum using a mass spectrometer to examine the behavior of gases in the material. The gas in the sintering atmosphere was predominantly emitted at the moment of fracture for all specimens. The total amount of gas emitted from a specimen sintered in O_2 was less than that of a specimen sintered in air or Ar, showing that the mobility of O_2 in the material was much higher than that of N_2 or Ar. During prolonged sintering, the density of specimens decreased, while the amount of emitted gas increased. Entrapped gases in the sintered body were concluded to bring about the density decrease during grain growth.
社団法人日本セラミックス協会の論文
2000-03-01