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- Title
Dielectric and microwave absorption properties of low power plasma sprayed NiCrAlY/AlO coatings.
- Authors
Zhou, Liang; Luo, Fa; Cui, Shan; Zhang, Yong
- Abstract
Low power plasma sprayed NiCrAlY/AlO coatings were fabricated with dried and crushed powders. Microstructure and phase composition were tested. The dielectric and microwave absorption properties of NiCrAlY/AlO coatings were also investigated in 8.2-12.4 GHz. Results showed that NiCrAlY presented in the form of numerous lamellas and a few particles. Both the real and imaginary part of permittivity increased with the increase of NiCrAlY content due to the enhancement of interfacial polarization and conductance loss. The reflection loss values of the coating filled with 20 wt% NiCrAlY could reach −10 dB in the frequency range of 8.7-10.8 GHz at a thickness of 1.7 mm.
- Subjects
PLASMA sprayed coatings; NICKEL-chromium-aluminum alloys; ELECTRIC properties of aluminum oxide; ALUMINUM oxide; ALUMINUM compounds spectra; YTTRIUM compounds synthesis; NANOFABRICATION; PERMITTIVITY
- Publication
Journal of Materials Science: Materials in Electronics, 2015, Vol 26, Issue 6, p3853
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-015-2911-9