کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10629257 991047 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of the spark plasma sintering parameters, LiF additive, and Nd dopant on the microwave dielectric and optical properties of transparent YAG ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Effect of the spark plasma sintering parameters, LiF additive, and Nd dopant on the microwave dielectric and optical properties of transparent YAG ceramics
چکیده انگلیسی
Not only the optical properties, but the microwave dielectric properties of Yttrium aluminium garnet (Y3Al5O12, YAG) ceramics prepared by co-precipitation method combined with spark-plasma sintering (SPS) were investigated by means of adjusting the factors of LiF additive, Nd dopant, and SPS process parameters. Results showed that the in-line transmittance of YAG ceramic with LiF sintered at 1360 °C was 81.8% in the infrared range. With increased sintering temperature, the quality factor (Q × f) and dielectric constant (εr) values of the pure YAG ceramics increased to the maximum and then decreased. The optimal microwave dielectric properties (Q × f = 89,810 GHz, εr = 10.63 and τf = −51.4 ppm/°C) are achieved for transparent YAG ceramics sintered at 1360 °C. The Q × f values of Nd:YAG ceramics were lower than those of the pure YAG ceramics. The optimal microwave dielectric properties of 2 at.%Nd:YAG ceramic cylinder can be obtained with the Q × f of 64,026 GHz, εr of 10.2 and τf of −64.8 ppm/ °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 36, Issue 11, September 2016, Pages 2767-2772
نویسندگان
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