Aspect and mass ratio dependence of microwave heating in silicon carbide fibers at 2.45 GHz

K. Kashimura; T. Namioka; T. Fujii; N. Yoshikawa; H. Fukushima

doi:10.1063/1.5021507

Aspect and mass ratio dependence of microwave heating in silicon carbide fibers at 2.45 GHz

K. Kashimura, T. Namioka, T. Fujii, N. Yoshikawa, H. Fukushima

ENG - Graduate School of Engineering (Common - Materials Science and Engineering)

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Silicon carbide is a key material in microwave (MW) processing and is widely employed as an MW absorber and catalytic agent. In this study, we experimentally improve the MW absorption properties of SiC particles at frequencies of 2.45 GHz by considering the shapes of fibers. We heated SiC fibers using MW radiation and their heating behaviors were then compared with their MW absorption properties. The heating behavior of the fibers was dependent on their aspect ratio; this result was in accordance with theoretical predictions. Furthermore, the mass ratio dependence of the MW heating behavior was investigated by employing an Al₂O₃-SiC fiber mixture. Their absorption properties exhibited peak MW absorption at specific relative densities under E_max and indicated different behavior from that predicted by the Maxwell-Garnett equation.

Original language	English
Article number	215108
Journal	Journal of Applied Physics
Volume	123
Issue number	21
DOIs	https://doi.org/10.1063/1.5021507
Publication status	Published - 2018 Jun 7

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title = "Aspect and mass ratio dependence of microwave heating in silicon carbide fibers at 2.45 GHz",

abstract = "Silicon carbide is a key material in microwave (MW) processing and is widely employed as an MW absorber and catalytic agent. In this study, we experimentally improve the MW absorption properties of SiC particles at frequencies of 2.45 GHz by considering the shapes of fibers. We heated SiC fibers using MW radiation and their heating behaviors were then compared with their MW absorption properties. The heating behavior of the fibers was dependent on their aspect ratio; this result was in accordance with theoretical predictions. Furthermore, the mass ratio dependence of the MW heating behavior was investigated by employing an Al2O3-SiC fiber mixture. Their absorption properties exhibited peak MW absorption at specific relative densities under Emax and indicated different behavior from that predicted by the Maxwell-Garnett equation.",

author = "K. Kashimura and T. Namioka and T. Fujii and N. Yoshikawa and H. Fukushima",

note = "Funding Information: K.K. is very grateful to M. Tanaka, K. Fujisaki, T. Watanabe, D. Mi, and M. Sato for their helpful discussions. This work was supported by the Research Institute for Sustainable Humanosphere, Kyoto University (project: Funding Information: This work was supported by the Research Institute for Sustainable Humanosphere, Kyoto University (project: Adam, Mission Research), Tokyo Medical and Dental University, Fukui University, KESCO, and by IKETANI Zaidan and CREST, JST Japan Science and Technology Cooperation. Publisher Copyright: {\textcopyright} 2018 Author(s).",

year = "2018",

month = jun,

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doi = "10.1063/1.5021507",

language = "English",

volume = "123",

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T1 - Aspect and mass ratio dependence of microwave heating in silicon carbide fibers at 2.45 GHz

AU - Kashimura, K.

AU - Namioka, T.

AU - Fujii, T.

AU - Yoshikawa, N.

AU - Fukushima, H.

N1 - Funding Information: K.K. is very grateful to M. Tanaka, K. Fujisaki, T. Watanabe, D. Mi, and M. Sato for their helpful discussions. This work was supported by the Research Institute for Sustainable Humanosphere, Kyoto University (project: Funding Information: This work was supported by the Research Institute for Sustainable Humanosphere, Kyoto University (project: Adam, Mission Research), Tokyo Medical and Dental University, Fukui University, KESCO, and by IKETANI Zaidan and CREST, JST Japan Science and Technology Cooperation. Publisher Copyright: © 2018 Author(s).

PY - 2018/6/7

Y1 - 2018/6/7

N2 - Silicon carbide is a key material in microwave (MW) processing and is widely employed as an MW absorber and catalytic agent. In this study, we experimentally improve the MW absorption properties of SiC particles at frequencies of 2.45 GHz by considering the shapes of fibers. We heated SiC fibers using MW radiation and their heating behaviors were then compared with their MW absorption properties. The heating behavior of the fibers was dependent on their aspect ratio; this result was in accordance with theoretical predictions. Furthermore, the mass ratio dependence of the MW heating behavior was investigated by employing an Al2O3-SiC fiber mixture. Their absorption properties exhibited peak MW absorption at specific relative densities under Emax and indicated different behavior from that predicted by the Maxwell-Garnett equation.

AB - Silicon carbide is a key material in microwave (MW) processing and is widely employed as an MW absorber and catalytic agent. In this study, we experimentally improve the MW absorption properties of SiC particles at frequencies of 2.45 GHz by considering the shapes of fibers. We heated SiC fibers using MW radiation and their heating behaviors were then compared with their MW absorption properties. The heating behavior of the fibers was dependent on their aspect ratio; this result was in accordance with theoretical predictions. Furthermore, the mass ratio dependence of the MW heating behavior was investigated by employing an Al2O3-SiC fiber mixture. Their absorption properties exhibited peak MW absorption at specific relative densities under Emax and indicated different behavior from that predicted by the Maxwell-Garnett equation.

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ER -

Aspect and mass ratio dependence of microwave heating in silicon carbide fibers at 2.45 GHz

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