Volume 37 Issue 2
Dec.  2017
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Article Navigation >  Journal of University of Electronic Science and Technology of China  > 2008  >  37(2): 293-296

XIE Jian-liang, LU Chuan-lin, DENG Long-jiang, CHEN liang. Electromagnetic Properties of Flaky Metal Magnetic Powder Coated by Coupling Agent[J]. Journal of University of Electronic Science and Technology of China, 2008, 37(2): 293-296.
Citation: XIE Jian-liang, LU Chuan-lin, DENG Long-jiang, CHEN liang. Electromagnetic Properties of Flaky Metal Magnetic Powder Coated by Coupling Agent[J]. Journal of University of Electronic Science and Technology of China, 2008, 37(2): 293-296.
shu

Electromagnetic Properties of Flaky Metal Magnetic Powder Coated by Coupling Agent

  • 1.

    School of Microelectronics and Solid-state Electronics,University of Electronic Science and Technology of China Chengdu 610054

  • Received Date: 2006-07-17
  • Rev Recd Date: 2006-11-30
  • Publish Date: 2008-04-15
  • The surface of flaky metal magnetic powders was coated by silane coupling agent. The appearance, structure and phase constitute of powders before and after treatment were characterized by SEM and RA-IR. And the powders were randomly dispersed in paraffin at a weight ratio of 5:1 for microwave electromagnetic parameters test and comparison in the frequency range of 2~18 GHz. The results show that a high resistivity film is formed on the powders surface by chemical bonding, and the real and imaginary parts of complex permittivity of sample decrease 9 in average but corresponding complex permeability decreases slightly. The coatings with thicknesses of 1 mm give a microwave absorption of 8 dB with a band width of 8.2 GHz and microwave absorption of the coated flaky metal magnetic powders is improved.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Electromagnetic Properties of Flaky Metal Magnetic Powder Coated by Coupling Agent

  • 1. School of Microelectronics and Solid-state Electronics,University of Electronic Science and Technology of China Chengdu 610054
  • Received Date: 2006-07-17
  • Rev Recd Date: 2006-11-30
  • Publish Date: 2008-04-15

Abstract: The surface of flaky metal magnetic powders was coated by silane coupling agent. The appearance, structure and phase constitute of powders before and after treatment were characterized by SEM and RA-IR. And the powders were randomly dispersed in paraffin at a weight ratio of 5:1 for microwave electromagnetic parameters test and comparison in the frequency range of 2~18 GHz. The results show that a high resistivity film is formed on the powders surface by chemical bonding, and the real and imaginary parts of complex permittivity of sample decrease 9 in average but corresponding complex permeability decreases slightly. The coatings with thicknesses of 1 mm give a microwave absorption of 8 dB with a band width of 8.2 GHz and microwave absorption of the coated flaky metal magnetic powders is improved.

XIE Jian-liang, LU Chuan-lin, DENG Long-jiang, CHEN liang. Electromagnetic Properties of Flaky Metal Magnetic Powder Coated by Coupling Agent[J]. Journal of University of Electronic Science and Technology of China, 2008, 37(2): 293-296.
Citation: XIE Jian-liang, LU Chuan-lin, DENG Long-jiang, CHEN liang. Electromagnetic Properties of Flaky Metal Magnetic Powder Coated by Coupling Agent[J]. Journal of University of Electronic Science and Technology of China, 2008, 37(2): 293-296.
shu

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