کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624206 | 989584 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dielectric and microwave absorption properties of TiAlCo ceramic fabricated by atmospheric plasma spraying
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Composite TiAlCo powders (TiO2, Co3O4 and Al2O3) were synthesized by spray-drying technology. The phase composition and morphology of synthesized powders were characterized by X-ray diffraction and scanning electron microscopy, respectively. Using above synthesized powders as starting materials, TiAlCo ceramic were successfully prepared by atmospheric plasma spraying (APS) with an internally fed powder torch. Electromagnetic parameters and microwave absorption properties of the prepared ceramic coatings were investigated in the frequency range from 8.2 to 12.4 GHz (X-band). It was found that both the real part and imaginary part of dielectric constant decreases with increasing Al2O3 content in the whole measured frequency region. Dielectric properties are closely related to the relaxation polarization and interfacial polarization and electric conductivity. Furthermore, by combination of the frequency selective surfaces (FSS) and prepared coatings, a double absorption band of the reflection loss spectra had been observed in X-band. The optimized reflection loss values exceeding â10 dB can be obtained in the frequency range of X-band when the coating thickness is only 1.8 mm, and the reflection loss is insensitive to incident angle from 0° to 45° for both transverse electromagnetic (TE) and transverse magnetic (TM) polarizations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 7, 15 May 2016, Pages 8525-8530
Journal: Ceramics International - Volume 42, Issue 7, 15 May 2016, Pages 8525-8530
نویسندگان
Zhaoning Yang, Fa Luo, Yang Hu, Dongmei Zhu, Wancheng Zhou,