کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7898793 | 1510137 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrical conductivity, dielectric and microwave absorption properties of graphene nanosheets/magnesia composites
ترجمه فارسی عنوان
هدایت الکتریکی، خواص جذب دی الکتریک و مایکروویو نانو ذرات گرافن / کامپوزیت منیزیم
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
Herein, a novel microwave absorbing material with Graphene nanosheets (GNSs) as microwave absorbing filler and magnesia (MgO) as matrix were prepared by hot-pressing sintering. The composites were highly dense with a homogeneous distribution of GNSs. Electrical conductivity, dielectric and microwave absorption properties in X-band were investigated. The results revealed that the electrical conductivity of the GNSs/MgO composites showed a typical percolation-type behavior with a percolation threshold of 3.34Â vol%. With GNSs content increased to 3Â vol%, the real permittivity, imaginary permittivity and dielectric loss tangent of the composites increased from â¼9, â¼0 and â¼0 to 26-43, 23-28 and 0.55-0.96, respectively. By adjusting the GNSs content, thickness and frequency, the 2.5Â vol% GNSs/MgO composite shows the minimum reflection loss of â36.5Â dB at 10.7Â GHz and the reflection loss below â10Â dB (90% absorption) ranges from 9.4 to 11.4Â GHz with 1.5Â mm thickness, exhibiting excellent microwave absorption properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 4, April 2018, Pages 1639-1646
Journal: Journal of the European Ceramic Society - Volume 38, Issue 4, April 2018, Pages 1639-1646
نویسندگان
Cheng Chen, Limei Pan, Senchuan Jiang, Shuang Yin, Xiaoyun Li, Jingxian Zhang, Yongbao Feng, Jian Yang,