均一沈殿法により合成したチタン酸アルミニウムの焼結性

概要

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Al_2O_3 hydrate coated TiO_2 particles were synthesized by homogeneous precipitation technique and their sin terability was studied. In the calcination of Al_2O_3 hy dratecoated Ti0_2 particles for lh, Al_2TiO_5 was formed by ca. 60 mol% at 1350℃, but at 800 to 1300℃ Al_2TiO_5 was not detected and only crystal growth of Al_2O_3 and TiO_2 occurred. In the sintering of calcined powders at 1350 to 1500℃ for 4h, the sintered density increased and the amount of Al_2TiO_5 formed decreased with in crease in calcination temperature between 800 and 1000℃. In the sintering of a powder calcined at 1350℃, the sintered density and the amount of Al_2TiO_5 in-creased with increase in sintering ternperature, resulting in 96% T.D. and 100% AI_2TiO_5 phase by sintering at 1500℃ for 4h.
社団法人日本セラミックス協会の論文
1994-03-01