کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10624409 989589 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High electromagnetic wave absorbing performance of activated hollow carbon fibers decorated with CNTs and Ni nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
High electromagnetic wave absorbing performance of activated hollow carbon fibers decorated with CNTs and Ni nanoparticles
چکیده انگلیسی
Activated hollow carbon fibers (ACHFs) decorated with carbon nanotubes (CNTs) and nickel nanoparticles (CNTs-Ni-ACHFs) were prepared by thermal reduction and chemical vapor deposition technique. Microwave reflection loss, permittivity and permeability of CNTs-Ni-ACHFs composites as novel electromagnetic wave absorbents were studied in the frequency range of 2-18 GHz. It was demonstrated that CNTs-Ni-ACHFs absorbents possessed the best microwave absorbing performances whose minimum reflection loss was −43.457 dB at 13.10 GHz with a thickness of 2.0 mm, which is much better than those of Ni-ACHFs and ACHFs samples. The dielectric polarizations and magnetic loss derived from the effect of the porous structures, Ni nanoparticles, and defects in the CNTs-Ni-ACHFs composites are playing an important role for the excellent microwave absorbing performances.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 4, March 2016, Pages 5278-5285
نویسندگان
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