کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5440617 | 1398234 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improvement in structural, dielectric and energy-storage properties of lead-free niobate glass-ceramic with Sm2O3
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Phase evolution, microstructure, dielectric performance, polarization, breakdown strength as well as energy-storage behaviors for the lead-free niobates glass-ceramics with Sm2O3 were systematically investigated. Two crystallographic structures of tetragonal tungsten bronze and orthorhombic perovskite complex phases were obtained and Sm3+ entered into the crystalline phases. The optimal microstructure of the glass-ceramic was obtained with Sm2O3 of 2Â mol%. Both dielectric constant and polarizability were enhanced with increasing Sm2O3. The breakdown strength and energy-storage behaviors of the glass-ceramics were also improved by increased Sm2O3. The highest breakdown field of 21.2Â kV/mm, the highest charged (0.74Â J/cm3) and discharged energy density (0.45Â J/cm3) were obtained in the glass-ceramic with 2Â mol% Sm2O3. It is due to the reduced interfacial polarization in this particular composition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 37, Issue 3, March 2017, Pages 995-999
Journal: Journal of the European Ceramic Society - Volume 37, Issue 3, March 2017, Pages 995-999
نویسندگان
Yi Zhou, Yan Qiao, Yuming Tian, Kaiyue Wang, Guomin Li, Yuesheng Chai,