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A NEW FRACTAL DESIGN OF POROUS AlN/BN/SiOC COMPOSITES WITH LOW- $k$ $k$ AND HIGH THERMAL CONDUCTIVITY

Department of Applied Physics, Wuhan University of Science and Technology, Wuhan 430081, P. R. China

Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan University of Science and Technology, Wuhan 430081, P. R. China

E-mail Address: xijiedong@163.com

Corresponding author.

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YIFAN HU

School of Physics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, P. R. China

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MEIJUAN YUAN

Department of Applied Physics, Wuhan University of Science and Technology, Wuhan 430081, P. R. China

Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan University of Science and Technology, Wuhan 430081, P. R. China

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JUN ZHAO

75310 Army, 25 Zhongnan Road, Wuhan 430071, P. R. China

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, and

LING CHEN

School of Mathematics and Physics, China University of Geosciences, 388 Lumo Road, Wuhan 430074, P. R. China

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https://doi.org/10.1142/S0218348X1950124XCited by:2 (Source: Crossref)

Abstract

In this work, we propose a new model for the dielectric constant and thermal conductivity, and apply it to the design of composites with low dielectric constant and high thermal conductivity based on fractal theory and effective medium theory. In particular, we use this model to prepare porous AlN/BN/SiOC composites with low dielectric constant and high thermal conductivity in different component fractions. We successfully synthesize ceramic samples with low dielectric constants $(< 3)$ $(< 3)$ and high thermal conductivity ( $\geq 2 W \cdot m^{- 1} \cdot K^{- 1}$ $\geq 2 W \cdot m^{- 1} \cdot K^{- 1}$ ). These results indicate that the proposed fractal design is valid.

Keywords:

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