کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10629366 | 991062 | 2015 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temperature-dependent dielectric and microwave absorption properties of SiCf/SiC-Al2O3 composites modified by thermal cross-linking procedure
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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: Temperature-dependent dielectric and microwave absorption properties of SiCf/SiC-Al2O3 composites modified by thermal cross-linking procedure Temperature-dependent dielectric and microwave absorption properties of SiCf/SiC-Al2O3 composites modified by thermal cross-linking procedure](/preview/png/10629366.png)
چکیده انگلیسی
SiCf/SiC-Al2O3 composites were modified by thermal cross-linking procedure during the PIP process to optimize the dielectric and microwave absorption properties in the temperatures of 25-700 °C at 8.2-12.4 GHz. Both complex permittivity and tan δ of the composites without and after cross-linking show obvious temperature-dependent behavior and increase with the increasing temperatures. The mechanisms for these corresponding enhancements are also proposed. The composites without cross-linking exhibit poor RL values in the experimental temperatures owing to the deviation of impedance matching caused by the high complex permittivity. After cross-linking, the complex permittivity of the composites is reduced to suitable levels and shows low increasing tendency and amplitude with the increasing temperatures. Thus, the microwave absorption properties of the composites are significantly enhanced over the whole temperature and frequency ranges. Particularly, results indicate that minimum RL values and bandwidth below â10 dB reach â41.71 dB and 3.4 GHz at 300 °C, and â22.76 dB and 4.1 GHz at 400 °C, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 35, Issue 11, October 2015, Pages 2991-3003
Journal: Journal of the European Ceramic Society - Volume 35, Issue 11, October 2015, Pages 2991-3003
نویسندگان
Yang Mu, Wancheng Zhou, Yang Hu, Hongyu Wang, Fa Luo, Donghai Ding, Yuchang Qing,