کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1464837 989672 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of the synthesis route on the final properties of SnO2-based varistors
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
The influence of the synthesis route on the final properties of SnO2-based varistors
چکیده انگلیسی

A comparative study of two customary routes of ceramics processing applied to the synthesis of SnO2-based varistors is reported in this paper. Devices of equivalent composition were prepared through the Pechini method and through directly mixing the oxides without the addition of anti-agglomerants or binders. The microstructures of the sintered samples were characterised with X-ray diffraction and scanning and transmission electron microscopies. The electrical behaviour of the devices was studied on the basis of the current density versus electric field (J–E) characteristics and impedance spectroscopy measurements. The Pechini method ensures the homogeneity in the distribution of the additives in the tin oxide matrix but the formation of secondary phases seems to be independent of the synthesis route. Devices with similar non-linear coefficients of 18 and 21 were obtained through the mixed oxides route and the Pechini method, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 34, Issue 3, April 2008, Pages 563–571
نویسندگان
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