Enhanced microwave absorption of screen-printed multiwalled carbon nanotube/Ca1−xBaxBi2Nb2O9 (0≤x≤1) multilayered thick film composites

Varsha D. Phadtare, Vinayak G. Parale, Gopal K. Kulkarni, Hyung Ho Park, Vijaya R. Puri

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Multiwalled carbon nanotube (MWCNT)/Ca1−xBaxBi2Nb2O9 (0 ≤ x ≤ 1)-layered thick film microwave-absorbing composites were prepared through the screen-printing method. The multilayered thick film composites were designed to improve their microwave absorption capabilities and the thickness of prepared thick films is around 115 μm. The layered thick film composites were synthesized with functionalized MWCNTs and co-precipitated Ca1−xBaxBi2Nb2O9 (0 ≤ x ≤ 1) (x = 0, 0.2, 0.4, 0.6, 0.8, and 1) Aurivillius-type ceramics. The microwave absorption, transmission and reflection properties were investigated in the J, X, and Ku-bands with a frequency range of 6–18 GHz. The multilayered thick film composites showed enhanced microwave absorption properties in the broadband frequency region. The multilayered composite with x = 0.8 had 1.5 times better microwave absorption than the only MWCNT thick film. This work presents a new approach to the fabrication of multilayered composites with enhanced microwave absorbance via simple screen-printing method.

Original languageEnglish
Pages (from-to)878-887
Number of pages10
JournalJournal of Alloys and Compounds
Volume765
DOIs
Publication statusPublished - 2018 Oct 15

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All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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