کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11263111 | 1781703 | 2019 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-performance (1-x)(0.2B2O3-0.8SiO2)-xTiO2 (x = 0.025-0.1) glass matrix composites for microwave substrate applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The (1-x)(0.2B2O3-0.8SiO2)-xTiO2 (xâ¯=â¯0.025-0.1) glass matrix composites were prepared by a solid state sintering method, and high relative density >97% was obtained when the sintering temperature was 975-1000â¯Â°C. The rutile and amorphous phases were indicated by XRD, and no crystallization of amorphous SiO2 or chemical reaction was observed. With increasing x from 0 to 0.1, the dielectric constant (εr) increased slightly while the Qf value decreased, and the temperature coefficient of resonant frequency (Ïf) increased from a negative to a positive value. The optimized microwave dielectric properties were obtained as following: εrâ¯=â¯4.01, Qfâ¯=â¯66,800â¯GHz, Ïfâ¯=â¯â2.2â¯ppm/oC for xâ¯=â¯0.025 sintered at 1000â¯Â°C, and εrâ¯=â¯4.22, Qfâ¯=â¯55,300â¯GHz, Ïfâ¯=â¯3.1â¯ppm/oC for xâ¯=â¯0.05 sintered at 975â¯Â°C. The ultra-low εr, high Qf value and near-zero Ïf indicate that the present glass matrix composites are excellent candidates as the microwave substrate materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 774, 5 February 2019, Pages 706-709
Journal: Journal of Alloys and Compounds - Volume 774, 5 February 2019, Pages 706-709
نویسندگان
Lei Li, Wen Bin Hong, Gu Yi Chen, Xiang Ming Chen,