Al_2O_3-TiO_2ゾル-ゲル系の結晶化挙動

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概要

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• Al_2O_3-TiO_2 thin films and powder were synthesised from acid catalyzed sols of aluminium and titanium alkoxides containing acetyl acetone as a chelating agent. The crystallization of the system was studied as a function of the relative compositions and the firing temperature. Films of four different alumina-titania compositions (10, 20, 30 and 40 mol% alumina) were prepared and fired at various temperatures in the range from 300 to 1000℃ . The films and powders were amorphous, at any composition, up to about 600℃. Larger molar contents of Al_2O_3 were found to have an inhibitory effect on the crystallization of TiO_2, while larger contents of TiO_2 had only a weak influence on Al_2O_3 crystallization. The formation of a metastable β-Al_2TiO_5 phase was observed in films at 1000℃.

• 社団法人日本セラミックス協会の論文
• 1999-10-01

著者

• TRAVERSA Enrico

  Dipartimento di Scienze e Tecnologie Chimiche, Universita di Roma"Tor Vergata," Via della Ricerca Sc

• Traversa E

  Univ. Roma “tor Vergata" Roma Ita

• Traversa Enrico

  Department Of Chemical Science And Technology University Of Rome "tor Vergata

• Traversa Enrico

  Dipartimento Di Scienze E Tecnologie Chimiche Universita Di Roma"tor Vergata " Via Della R

• Traversa Enrico

  Dipartimento Di Scienze E Tecnologie Chimiche Universita Di Roma "tor Vergata " Via Della

• Traversa Enrico

  Universita Di Roma"tor Vergata"dipartimento Di Scienze E Tecnologie Chimiche

• Enrico Traversa

  Department Of Chemical Sciences And Technology University Of Rome "tov Vergata

• MARTUCCI Alessandro

  Dipartimento di Ingegneria Meccanica, Settore Materiali, Universita di Padova

• INNOCENZI Plinio

  Auther for correspondence

• Martucci Alessandro

  Dipartimento Di Ingegneria Meccanica Settore Materiali Universita Di Padova

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• Al_2O_3-TiO_2ゾル-ゲル系の結晶化挙動

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