کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1630359 | 1516665 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of chemical vapor infiltration treatment on the wave-absorbing performance of carbon fiber/cement composites
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Short carbon fibers were treated at high temperatures around 1100°C through chemical vapor infiltration technology. A thinner layer of pyrocarbon was deposited on the fiber surface. The dispersion of carbon fibers in a cement matrix and the mechanical properties of carbon fiber/cement composites were investigated by scanning electron microscopy (SEM) and other tests. The reflectivity of electromagnetic waves by the composites was measured in the frequency range of 8.0-18 GHz for different carbon fiber contents of 0.2wt%, 0.4wt%, 0.6wt%, and 1.0wt%. The results show that the reflectivity tends to increase with the increase of fiber content above 0.4wt%. The minimum reflectivity is â19.3 dB and the composites exhibit wave-absorbing performances. After pyrocarbon is deposited on the fiber, all the reflectivity data are far greater. They are all above â10 dB and display mainly wave-reflecting performances.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material - Volume 15, Issue 6, December 2008, Pages 808-815
Journal: Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material - Volume 15, Issue 6, December 2008, Pages 808-815
نویسندگان
Kezhi Li, Chuang Wang, Hejun Li, Lingjun Guo, Jihua Lu,