کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7996963 | 1516211 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Giant strain, thermally-stable high energy storage properties and structural evolution of Bi-based lead-free piezoceramics
ترجمه فارسی عنوان
کشش غول پیکر، خواص ذخیره انرژی بالا با حرارت بالا و تکامل ساختاری پیزوآرکامیک بدون سرب بدون بی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
بدون سرب، پیزو الکتریکی، ذخیره انرژی، پیزوالکتریک شروع کننده کشش ناشی از فیلد،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
In this study, the mechanism of electric-field-induced phase transition in 0.96[Bi0.5(Na0.84K0.16)0.5Ti1-xTaxO3]-0.04SrTiO3, (where 0.00 â¤Â x â¤Â 0.030, abbreviated as BNKTT-ST) ceramics was discussed based on crystal structure and electromechanical properties. X-ray powder diffraction (XRD) showed a phase transition from mixed rhombohedral-tetragonal to single pseudocubic when x â¥Â 0.020. Large electromechanical strain of â¼0.42% with a dynamic piezoelectric constant (Smax/Emax) of â¼700 pm/V at 6 kV/mm was recorded for 2 mol. % Ta content. Interestingly, at lower field of 4 kV/mm, the Smax/Emax attained the highest value of â¼830 pm/V. Poled, unpoled XRD analysis and electrical properties suggest that the relatively high Smax/Emax at x = 0.020 may be attributed to the combined effect of composition and ferroelectric (FE) to ergodic relaxor (ER) phase transition. Furthermore, the energy storage density was studied as a function of both composition and temperature to demonstrate the suitability for capacitor applications. This system also revealed improved energy storage properties. Particularly, for x = 0.020, a nearly temperature-invariant large recoverable energy density (W = 0.65 J/cm3) was achieved over a wide temperature range (75-150 °C). These properties demonstrate that the fabricated system might be a promising lead-free candidate for actuators and high temperature energy storage capacitor applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 682, 15 October 2016, Pages 302-310
Journal: Journal of Alloys and Compounds - Volume 682, 15 October 2016, Pages 302-310
نویسندگان
Rizwan Ahmed Malik, Ali Hussain, Adnan Maqbool, Arif Zaman, Tae Kwon Song, Won-Jeong Kim, Myong-Ho Kim,