Microwave Absorption Properties of Polymer-Derived SiCN(Fe)/Si3N4 Ceramics

  • Xiao Lin
  • Hongyu GongEmail author
  • Yujun Zhang
  • Jianqiang Bi
  • Yurun Feng
  • Shan Wang
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


Iron-doped SiCN/Si3N4 ceramics were synthesized by dipping-pyrolysis polysilazane with iron(III) acetylacetonate and use porous silicon nitride as matrix. The polysilazane pyrolyzed a certain amount of free carbon and silicon nitride at the high temperature. The content of iron increased with the increase in the amount of iron(III) acetylacetonate addition. When the sample was added with 5wt% iron(III) acetylacetone, the ε′ reached the lowest value of 1 at 15.4 GHz, the highest peak value of the tan ε was 3.09 at 15.2 GHz, and the R of the sample was lower than −20 dB at 15.5 GHz, which implied that it has great wave absorption performance in the high-frequency region and could absorb more than 99% of the incident electromagnetic waves. The uniform distribution of C, β-SiC, and α-Fe in the samples is helpful to improve the wave absorption properties of the materials.


Porous Si3N4 Iron(III) Acetylacetonate Polysilazane Dipping-pyrolysis Wave-absorbing properties 


  1. 1.
    Abbas SM, Dixit AK, Chatterjee R et al (2007) Complex permittivity, complex permeability and microwave absorption properties of ferrite-polymer composites. J Magn Magn Mater 309(1):20–24CrossRefGoogle Scholar
  2. 2.
    Tong GX, Ma J, Wu WH et al (2011) Grinding speed dependence of microstructure, conductivity, and microwave electromagnetic and absorbing characteristics of the flaked Fe particles. J Mater Res 26(5):682–688CrossRefGoogle Scholar
  3. 3.
    Zhu H, Zhang L (2009) Dielectric, magnetic, and microwave absorbing properties of multi-walled carbon nanotubes filled with Sm2O3 nanoparticles. Mater Lett 63(2):272–274CrossRefGoogle Scholar
  4. 4.
    Afzalia A, Mottaghitalab V, Afghahi SSS et al (2017) Electromagnetic properties of absorber fabric coated with BaFe12O19/MWCNTs/PANi nanocomposite in X and Ku bands frequency. J Magn Magn Mater 442:224–230CrossRefGoogle Scholar
  5. 5.
    Wu H, Wang L, Wang Y (2012) Enhanced microwave performance of highly ordered mesoporous carbon coated by Ni2O3 nanoparticles. J Alloy Compd 525:82–86CrossRefGoogle Scholar
  6. 6.
    Zhang D, Liu Q, Fan T (2008) Electromagnetic wave absorption properties of porous carbon/Co nanocomposites. Appl Phys Lett 93(1):13110–13111Google Scholar
  7. 7.
    Nikmanesh H, Hoghoghifard S, Hadi-Sichani B (2019) Study of the structural, magnetic, and microwave absorption properties of the simultaneous substitution of several cations in the barium hexaferrite structure. J Alloy Compd 775:1101–1108CrossRefGoogle Scholar
  8. 8.
    Deng LJ, Han MG (2007) Microwave absorbing performances of multiwalled carbon nanotube composites with negative permeability. Appl Phys Lett 91(2):23111–23119CrossRefGoogle Scholar
  9. 9.
    Geng D, Liu X, Xie Z et al (2011) Magnetic and Microwave-absorption properties of Graphite-coated (Fe, Ni) Nanocapsules. J Mater Sci Technol 27(7):607–614CrossRefGoogle Scholar
  10. 10.
    Li Q, Yin X, Feng L (2012) Dielectric properties of Si3N4–SiCN composite ceramics in X-band. Ceram Int 38(7):6015–6020CrossRefGoogle Scholar
  11. 11.
    Liu X, Zhang L, Liu Y et al (2014) Microstructure and the dielectric properties of SiCN–Si3N4 ceramics fabricated via LPCVD/CVI. Ceram Int 40(3):5097–5102CrossRefGoogle Scholar
  12. 12.
    Lin X, Shi J, Gong H (2017) Preparation and properties of pressureless-sintered porous Si3N4 ceramics. Adv Funct Mater (CMC 2017), 3–100Google Scholar
  13. 13.
    Zhang Z, Fan Z, Luo G (2006) Electromagnetic and microwave absorbing properties of multi-walled carbon nanotubes/polymer composites. Mater Sci Eng, B. Solid-State Mater Adv Technol 132(1/2):85–89Google Scholar
  14. 14.
    Liu H, Zou Y, Yang L (2006) The influence of temperature on magnetic and microwave absorption properties of Fe/graphite oxide nanocomposites. J Magn Magn Mater 302(2):343–347CrossRefGoogle Scholar
  15. 15.
    Sun Y, Li Y, Su D et al (2015) Preparation and characterization of high temperature SiCN/ZrB2 ceramic composite. Ceram Int 41(3):3947–3951CrossRefGoogle Scholar
  16. 16.
    Liu JR, Itoh M, Machida K (2003) Electromagnetic wave absorption properties of Fe/Fe3B/Y2O3 nanoparticles in gigahertz range. Appl Phys Lett 83:4017CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  • Xiao Lin
    • 1
    • 2
  • Hongyu Gong
    • 1
    • 2
    Email author
  • Yujun Zhang
    • 1
    • 2
  • Jianqiang Bi
    • 1
  • Yurun Feng
    • 1
    • 2
  • Shan Wang
    • 1
    • 2
  1. 1.Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials of Ministry of EducationShandong UniversityJinanChina
  2. 2.Key Laboratory of Special Functional Aggregated MaterialsMinistry of Education, Shandong UniversityJinanChina

Personalised recommendations