无水的
溶胶凝胶
无定形固体
浸涂
材料科学
退火(玻璃)
铝
醋酸
化学工程
涂层
薄膜
热处理
基质(水族馆)
溶剂
分析化学(期刊)
化学
复合材料
纳米技术
有机化学
工程类
地质学
海洋学
作者
Naoufal Bahlawane,Toshiro Watanabe
标识
DOI:10.1111/j.1151-2916.2000.tb01556.x
摘要
An anhydrous alumina (Al 2 O 3 ) sol was prepared from aluminum isopropoxide and an organic solvent, using an acetic acid stabilizer. The complete conversion of the dried sol to α‐Al 2 O 3 was accomplished at a temperature of 950°C by a single transition via γ‐Al 2 O 3 . Al 2 O 3 that was deposited via dip coating resulted in amorphous films, even after annealing at 1100°C, because of the silicon diffusion from the substrate. This phenomenon was avoided using a rapid thermal treatment in a flame after dip coating, which resulted in uniform thin films that are converted to α‐Al 2 O 3 via heat treatment.
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