کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5437271 | 1509798 | 2017 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced microwave-absorbing properties of FeCo magnetic film-functionalized silicon carbide fibers fabricated by a radio frequency magnetron method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Silicon carbide (SiC) fibers have potential application in microwave absorption materials in recent years. In this study, we provide a new method for improving the microwave-absorbing properties of SiC fibers. Magnetic FeCo films were fabricated on SiC fibers at low temperature and high vacuum by a radio frequency magnetron sputtering method. The properties of FeCo film/SiC fiber (FeCo/SiCf) composites were investigated. When compared with SiC fiber, the FeCo/SiCf composites exhibit excellent microwave-absorbing properties in the microwave range, with enhancements in the optimal reflectivity loss from â5.03 to â25.51Â dB. This excellent performance may be because of the magnetic loss due to ferromagnetic resonance and interfacial polarization, thus inducing dielectric relaxation. In addition, the magnetic properties of FeCo/SiCf composites are significantly improved: the value of saturation magnetization reaches up to 41.45Â emu/g and the coercivity is 116.27Â Oe. In addition, the strength of SiC fiber remains at 99.17% after the fabrication process. The method provided in this study for enhancing the microwave-absorbing properties of FeCo/SiCf composites will pave a new way for the development of SiC microwave-absorbing materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 18, 15 December 2017, Pages 16371-16375
Journal: Ceramics International - Volume 43, Issue 18, 15 December 2017, Pages 16371-16375
نویسندگان
Yongshan Wei, Jianling Yue, Xiuzhi Tang, Xiaozhong Huang,