ゾル-ゲル法によるベータ・アルミナファィバーの調製(イオン伝導性セラミックス)(<特集>導電性セラミックス)

概要

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In order to produce ion conducting betaalumina fibers by sol-gel method, the sols of Na_2O-Al_20_3 system were prepared by heating the slurries consisting of Al(NO_3)_3・9H_2O, Al powder, NaN0_3,H_2O and HNO_3 in reflux. Long gel fibers of 5-250μm in diameter were drawn from the spinnable viscous sols. When the gel fibers were heated in an open cruicible, the amount of Na_2O vaporization from fibers increased as the fiber diameter decreased. When the gel fibers derived from the sol corresponding to calculated oxide composition Na_2O・7.3 Al_2O_3 were heated at 1100℃ for 10 min with powder of high Na_2O content in covered cruicible, ceramic fibers consisting solely of fine beta-alumina crystals were produced.
社団法人日本セラミックス協会の論文
1989-10-01