Analysis of trace amounts of emitted gases during fracture of high-purity alumina under ultrahigh vacuum-Effects of sintering atmosphere and sintering time on gas emission behavior

Mineaki Matsumoto, Satoshi Kitaoka, Hideaki Matsubara, Shigeru Kuramoto, Mikihiro Kanno

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The effects of sintering atmosphere and sintering time on gas emission behavior during fracture of high-purity Al2O3 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 O2 was less than that of a specimen sintered in air or Ar, showing that the mobility of O2 in the material was much higher than that of N2 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.

本文言語English
ページ(範囲)217-223
ページ数7
ジャーナルJournal of the Ceramic Society of Japan
108
3
DOI
出版ステータスPublished - 2000

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学

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