Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌)
Online ISSN : 1882-1022
Print ISSN : 0914-5400
ISSN-L : 0914-5400
500℃付近でα-Al2O3へ変化するアルミナゲルのゾル-ゲル法による調製
神谷 寛一余谷 純子仙波 隆二松岡 純那須 弘行
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1996 年 104 巻 1211 号 p. 685-687

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The alumina gels which form α-Al2O3 at heat treatment temperature as low as -500°C were prepared from aluminum-sec-butoxide by the sol-gel method under the ambient condition. Preparation of transparent alumina sol by hydrolysis of the alkoxide at a low temperature such as 0°C and aging the sol at a moderately low temperature, typically 8°C for a relatively long time up to 30 days were found to be important for obtaining such alumina gels.
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