کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438427 | 1398184 | 2017 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase transition behaviour and physicochemical properties of KNbO3 ceramics
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
We report herein the synthesis and morpho-structural properties of potassium niobate (KNbO3) nanopowders obtained by sol-gel starting from C4H4NNbO9·H2O (ammonium niobate (V) oxalate hydrate), KOH (potassium hydroxide) solution, citric acid (used as a chelating agent) and ethylic alcohol (used as a gelling agent). The thermal behaviour of the KNbO3 compound was studied by thermo-gravimetric analysis (TG/DTG) at different temperatures and atmospheres. Moreover, different thermal treatments at 300, 450, 600 and 800 °C were performed in order to study the thermal stability of the powders obtained, whose morphology, particle size, structure and degree of crystallization were comparatively characterized by X-Ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and scanning electron microscopy (SEM).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 8, 1 June 2017, Pages 5963-5967
Journal: Ceramics International - Volume 43, Issue 8, 1 June 2017, Pages 5963-5967
نویسندگان
P. Vlazan, M. Stoia, M. Poienar, P. Sfirloaga,