کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1476383 1510146 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphology and crystallinity of KNbO3-based nano powder fabricated by sol–gel process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Morphology and crystallinity of KNbO3-based nano powder fabricated by sol–gel process
چکیده انگلیسی

Lead-free KNbO3 (KN) powder was fabricated by sol–gel process from metal alkoxides. KN precursor solutions were prepared by different preparation conditions such as the order of reflux process for alkoxides and the kinds of solvent. KN powders were sintered at 900 °C with a heating rate of 10 °C/min. Single phase KN powder was obtained using precursor solution prepared by reflux at 120 °C. We considered that the crystallinity of KN powder was affected by the dimer in Nb-pentaethoxide of the starting chemicals. On the other hand, grain shape of the KN powder also depended on the existence of secondary phase K4Nb6O17, and the grain size of the fine powder fabricated from precursor solution prepared by reflux at 80 °C using 2-methoxethanol and ethanol solvents was estimated to be about 500 nm and 1 μm, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 27, Issues 13–15, 2007, Pages 3591–3595
نویسندگان
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