کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1449726 | 988713 | 2007 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Direct synthesis of varistor-grade doped nanocrystalline ZnO and its densification through a step-sintering technique
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Direct synthesis of varistor-grade doped nanocrystalline ZnO and its densification through a step-sintering technique Direct synthesis of varistor-grade doped nanocrystalline ZnO and its densification through a step-sintering technique](/preview/png/1449726.png)
چکیده انگلیسی
A direct synthesis of varistor-grade doped ZnO powder was attempted by simple hydrolysis followed by low-temperature refluxing (80 °C) in aqueous and alcoholic media. Rod like, one-dimensional nanocrystalline doped ZnO powders with crystallite size 24 nm and Brunauer–Emmett–Teller (BET) bulk surface area 22 m2 g−1 were synthesized. Sintering characteristics of these powders were analyzed under step-sintering coupled with rapid heating up to 1050 °C. The microstructural features and I–V characteristics of the step-sintered doped ZnO were compared with composite varistors. The study shows the advantage of the addition of nanosize doped varistor-grade ZnO as well as step-sintering for controlling grain size and improving varistor performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 55, Issue 17, October 2007, Pages 5792–5801
Journal: Acta Materialia - Volume 55, Issue 17, October 2007, Pages 5792–5801
نویسندگان
S. Anas, R.V. Mangalaraja, Mukundan Poothayal, Sanjeev K. Shukla, S. Ananthakumar,