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Plasma-induced FeSiAl@Al2O3@SiO2 core–shell structure for exceptional microwave absorption and anti-oxidation at high temperature

Journal Article


Abstract


  • © 2019 Elsevier B.V. Structural and chemical stability is the key factors of microwave absorbers for their applications in case of high-temperature oxidation. In this study, a plasma-induced method is developed to get a multistrata core-shell structure of FeSiAl@Al2O3@SiO2 with bifunctional performances of microwave absorption and anti-oxidation. Within a dense microstructure, the Al2O3 and SiO2 ceramic shell layers mitigate oxygen transport to prevent corrosion at high temperature. Consequently, the magnetic FeSiAl core is well-protected against oxidation up to 1279 °C in air and exhibits excellent microwave absorption property. In particular, dense ceramic layers effectively reduce the permittivity of FeSiAl without losing permeability. Furthermore, the novel FSA@GCLs microstructures are enriched with multiple interfaces to favor the interfacial polarization and vast internal scattering probabilities. Because of the strong synergistic magnetic-dielectric effects, the multistrata core-shell structure of FeSiAl@Al2O3@SiO2 owns a minimum reflection loss of −46.29 dB at 16.93 GHz and its wide bandwidth (with an RL value of −10 dB) particularly acquire 7.33 GHz in the frequency range of 10.14–17.45 GHz. The highly stable multistrata core-shell opens up the opportunities of extending the microwave absorption as well as anti-oxidation applications.

Authors


  •   Guo, Yang (external author)
  •   Jian, Xian (external author)
  •   Zhang, Li (external author)
  •   Mu, Chunhong (external author)
  •   Yin, Liangjun (external author)
  •   Xie, Jianliang (external author)
  •   Mahmood, Nasir (external author)
  •   Dou, Shi Xue
  •   Che, Renchao (external author)
  •   Deng, Longjiang (external author)

Publication Date


  • 2019

Citation


  • Guo, Y., Jian, X., Zhang, L., Mu, C., Yin, L., Xie, J., Mahmood, N., Dou, S., Che, R. & Deng, L. (2019). Plasma-induced FeSiAl@Al2O3@SiO2 core–shell structure for exceptional microwave absorption and anti-oxidation at high temperature. Chemical Engineering Journal,

Scopus Eid


  • 2-s2.0-85075427691

Place Of Publication


  • Netherlands

Abstract


  • © 2019 Elsevier B.V. Structural and chemical stability is the key factors of microwave absorbers for their applications in case of high-temperature oxidation. In this study, a plasma-induced method is developed to get a multistrata core-shell structure of FeSiAl@Al2O3@SiO2 with bifunctional performances of microwave absorption and anti-oxidation. Within a dense microstructure, the Al2O3 and SiO2 ceramic shell layers mitigate oxygen transport to prevent corrosion at high temperature. Consequently, the magnetic FeSiAl core is well-protected against oxidation up to 1279 °C in air and exhibits excellent microwave absorption property. In particular, dense ceramic layers effectively reduce the permittivity of FeSiAl without losing permeability. Furthermore, the novel FSA@GCLs microstructures are enriched with multiple interfaces to favor the interfacial polarization and vast internal scattering probabilities. Because of the strong synergistic magnetic-dielectric effects, the multistrata core-shell structure of FeSiAl@Al2O3@SiO2 owns a minimum reflection loss of −46.29 dB at 16.93 GHz and its wide bandwidth (with an RL value of −10 dB) particularly acquire 7.33 GHz in the frequency range of 10.14–17.45 GHz. The highly stable multistrata core-shell opens up the opportunities of extending the microwave absorption as well as anti-oxidation applications.

Authors


  •   Guo, Yang (external author)
  •   Jian, Xian (external author)
  •   Zhang, Li (external author)
  •   Mu, Chunhong (external author)
  •   Yin, Liangjun (external author)
  •   Xie, Jianliang (external author)
  •   Mahmood, Nasir (external author)
  •   Dou, Shi Xue
  •   Che, Renchao (external author)
  •   Deng, Longjiang (external author)

Publication Date


  • 2019

Citation


  • Guo, Y., Jian, X., Zhang, L., Mu, C., Yin, L., Xie, J., Mahmood, N., Dou, S., Che, R. & Deng, L. (2019). Plasma-induced FeSiAl@Al2O3@SiO2 core–shell structure for exceptional microwave absorption and anti-oxidation at high temperature. Chemical Engineering Journal,

Scopus Eid


  • 2-s2.0-85075427691

Place Of Publication


  • Netherlands