کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1626116 1516440 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of the sintering temperature on electrical property of the Ce0.8Sm0.1Y0.1O1.9 electrolyte
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Influence of the sintering temperature on electrical property of the Ce0.8Sm0.1Y0.1O1.9 electrolyte
چکیده انگلیسی

In this study, nano-scale rare-earth co-doped Ce0.8Sm0.1Y0.1O1.9 material was prepared by the sol–gel method. When sintered after 1300, 1400, 1500 and 1600 °C, the samples all presented well single phase. The SEM result exhibited that when sintered after 1300 and 1400 °C, the pellets were denser with fewer pores than those sintered after 1500 and 1600 °C; and the sample was over-sintered after sintered over 1500 °C. Impedance spectroscopy analyses of the samples sintered at various temperatures were performed at 300–850 °C. And electrical conductivity and activation energy of bulk, grain boundary and the whole electrolyte were calculated. The results displayed that, for all samples treated at different temperatures, the activity energies of grain-boundary conduction all presented higher values (1.02–1.20 eV) than those of the bulk (0.78–0.85 eV); and the samples sintered at 1300 and 1400 °C showed much higher total conductivity and lower activation energy than those sintered at 1500 and 1600 °C. It demonstrated that rare-earth co-doped Ce0.8Sm0.1Y0.1O1.9 material prepared by the sol–gel method could be easy to sinter at lower temperature dense ceramic electrolyte with better electrical property.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 433, Issues 1–2, 16 May 2007, Pages 274–278
نویسندگان
, , , , , , , ,