BaFe/sub 12/O/sub 19/ Powder Preparation by Pyrolyzing the Corresponding Ester Precursors
學年 88
學期 1
發表日期 1999-11-26
作品名稱 BaFe/sub 12/O/sub 19/ Powder Preparation by Pyrolyzing the Corresponding Ester Precursors
作品名稱（其他語言）
著者 Yu, Husan-Fu; Huang, Kuo-Chao
作品所屬單位 淡江大學化學工程學系
出版者
會議名稱 八十八年度化工學會年會及研討會專輯─化學工程技術研討會
會議地點 高雄, 臺灣
摘要 Magnetic BaFe/sub 12/O/sub 19/ with ultrafine crystallites was produced via a citric acid precursor method. Ester precursors that contained the required amount of Ba/sub 2+/ and Fe/sub 3+/ to form barium ferrites were prepared by chelating Ba/sub 2+/ and Fe/sub 3+/ with citric acid in an aqueous solution of nitrates and then reacting the solution with ethylene glycol at 353 K. The pH values of aqueous solutions were adjusted using ammonium hydroxide. The dried solid precursors were then pyrolyzed at 623, 873 and 1,073 K, respectively. The effects of pH of the starting aqueous solutions on the characteristics of the resultant powder were studied using SEM, TEM, EDM, XRD, and EDS. The experimental results showed that the powder obtained at 873 K or below was composed of .gamma.-Fe/sub 2/ O/sub 3/ and BaCO/sub 3/. At 1,073 K, submicron crystalline BaFe/sub 12/O/sub 19/ powder was obtained.
關鍵字 前驅物法;粉體製備;酯;Precursor Method;Powder Preparation;Ester
語言 en
收錄於
會議性質
校內研討會地點
研討會時間 19991126~19991127
通訊作者
國別 TWN
公開徵稿 Y
出版型式 紙本
出處 八十八年度化工學會年會及研討會專輯─化學工程技術研討會論文集
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