کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10629693 | 991139 | 2012 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The low-temperature sintering of M-type hexaferrites
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The sintering of the M-type hexaferrites, AFe12O19 (A = Ba, Sr), was studied. The effects of the A cation type, the partial CuO substitution for Fe2O3 and the Fe deficiency on the sintering were examined. Samples with nominal compositions of Ba1âzSrzCuxFeyâxO19âδ (z = 0 or 0.5, x = 0-1.0 and y = 11-12) were prepared with a solid-state reaction at 1000 °C. The CuO addition enhanced significantly the sintering rate of the hexaferrites at temperatures below 1100 °C, while a moderate effect on the sintering was caused by a partial substitution of Sr for Ba. The diffusion studies showed that the CuO addition enabled the reactive liquid-phase sintering of hexaferrites at 1000 °C. The relative sintered densities of the Cu-containing hexaferrite ceramics sintered at 1000 °C for 3 h were around 90%. The addition of CuO had a strong effect on the coercivity, but only a moderate effect on the magnetization of the studied ceramics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 32, Issue 12, September 2012, Pages 3351-3360
Journal: Journal of the European Ceramic Society - Volume 32, Issue 12, September 2012, Pages 3351-3360
نویسندگان
Darja Lisjak,