| 摘要 |
PURPOSE:To obtain the titled molded article having high strength and flexibility efficiently and stably, by processing alumina filament precursor obtained by precursor yarn forming method into a molded article in an atmosphere at a specific humidity and heat-treating. CONSTITUTION:Alumina filament precursor (preferably having 5-20wt% water content and 5-30wt% organic polymer content) obtained by precursor yarn forming method is processed into a molded article in an atmosphere at <=50% RH, preferably <=40% RH. Then, it is heat-treated to give the aimed molded article.
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