4.6 Article

Preparation of Fe20Ni80 submicron fibers by an oxalate precipitation-thermal decomposition process and their microwave absorbing properties

Journal

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 28, Issue 18, Pages 13548-13555

Publisher

SPRINGER
DOI: 10.1007/s10854-017-7194-x

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Funding

  1. National Science Foundation of China [51604005]

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Fe20Ni80 submicron fibers were prepared by an oxalate precipitation-thermal decomposition process, and their morphologies, structures and microwave absorbing properties were systematically investigated. Firstly, an oxalate precursor with a one-dimensional growth mechanism was synthesized by using ethylenediamine as a coordination agent. Secondly, the Fe20Ni80 submicron fibers with a diameter of about 300 nm were obtained by a thermal decomposition of the precursors. The electromagnetic parameters of Fe20Ni80 submicron fibers (20 wt%)/paraffin composite were measured and the microwave absorbing properties were determined by the reflection loss (RL) values in the frequency range of 2-18 GHz. The results show that the composite exhibits excellent microwave absorption properties. When the composite thickness is 2.0 mm, the minimum RL reaches -36.97 dB at 11.89 GHz, and the bandwidth of RL < -10 dB reaches 3.22 GHz (10.36-13.58 GHz).

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