کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10632762 | 992438 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
SrTiO3-SrZrO3 solid solution: Phase formation kinetics and mechanism through solid-oxide reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: SrTiO3-SrZrO3 solid solution: Phase formation kinetics and mechanism through solid-oxide reaction SrTiO3-SrZrO3 solid solution: Phase formation kinetics and mechanism through solid-oxide reaction](/preview/png/10632762.png)
چکیده انگلیسی
The perovskite solid solution composition Sr(Ti0.5Zr0.5)O3 (STZ (ss)) has been synthesized from the mixture of SrCO3, TiO2 and ZrO2 powders through solid-state reaction. The phase formation mechanism and kinetics were investigated using TG/DSC, XRD. SrCO3 in the precursor decomposes at relatively lower temperature than pure powder decomposition, due to the presence of acidic TiO2. Upon calcinations of the precursor SrTiO3 (ST) and SrZrO3 (SZ) were formed separately in the system. Then ST defuses in to SZ to form STZ (ss). ST formation started at lower temperature (800 °C) with lower activation energy (47.274 kcal/mol) than SZ. SZ formation started at 1000 °C with high activation energy (65.78 kcal/mol). STZ (ss) formation started from 1500 °C with very high activation energy (297.52 kcal/mol). It is concluded that solid solution formed coherently with SZ lattice by the diffusion of Ti in to the SZ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 40, Issue 7, 12 July 2005, Pages 1187-1193
Journal: Materials Research Bulletin - Volume 40, Issue 7, 12 July 2005, Pages 1187-1193
نویسندگان
J. Bera, S.K. Rout,