کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1606168 1516215 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dielectric and microwave absorption properties of TiO2/Al2O3 coatings and improved microwave absorption by FSS incorporation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Dielectric and microwave absorption properties of TiO2/Al2O3 coatings and improved microwave absorption by FSS incorporation
چکیده انگلیسی


• Dielectric properties of TiO2/Al2O3 ceramics fabricated by APS technique are reported for the first time.
• Microwave absorption properties of TiO2/Al2O3 composites are improved by FSS.
• Reflection loss values exceeding −10 dB can be obtained in the whole X-band when coating thickness is 2.3 mm.

In this paper, TiO2/Al2O3 ceramic coatings were prepared by atmospheric plasma spraying (APS) technique. The phase composition and morphological characterizations of the synthesized TiO2/Al2O3 powders and coatings were performed by X-ray diffraction and scanning electron microscopy (SEM), respectively. The dielectric properties of these coatings were discussed in the frequency range from 8.2 to 12.4 GHz (X-band). By calculating the microwave-absorption as a single-layer absorber, their microwave absorption properties were investigated at different content and thickness in details. Furthermore, by combination of the Frequency selective surface (FSS) and ceramic coatings, a double absorption band of the reflection loss spectra had been observed. The microwave absorbing properties of coatings both in absorbing intensity and absorbing bandwidth were improved. The reflection loss values of TiO2/Al2O3 coatings exceeding −10 dB (larger than 90% absorption) can be obtained in the whole frequency range of X-band with 17 wt% TiO2 content when the coating thickness is 2.3 mm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 678, 5 September 2016, Pages 527–532
نویسندگان
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