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01-11-2020 | Research and Development

Electrical and Physical Properties of Ceramic Whiskers from the Al2O3-CaB6 System

Authors: M.M. Gomaa, S.H. Kenawy

Published in: Interceram - International Ceramic Review | Issue 6/2020

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Abstract

Abstract: In this study physical properties were determined for ceramic whiskers based on the Al2O3-CaB6 system. Through a wet method and a sintering process between 1400 °C and 1500 °C, aluminium borate (Al18B4O33) was developed from the binary Al2O3 (95-85 %)-CaB6 (5-15 %) system. The whisker microstructure from interlocked fibres (between 8 and 30 µm in width) developed after the sintering process. The addition of CaB6 at the expense of alumina at all additions resulted in an increase of the conductivity and the dielectric constant of the corresponding ceramic materials. The relationships between the phases formed, the conductivity and the dielectric values of the studied specimens were found to differ according to the complicated void structure (pores) in the specimens as detected in SEM images.
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Metadata
Title
Electrical and Physical Properties of Ceramic Whiskers from the Al2O3-CaB6 System
Authors
M.M. Gomaa
S.H. Kenawy
Publication date
01-11-2020
Publisher
Springer Fachmedien Wiesbaden
Published in
Interceram - International Ceramic Review / Issue 6/2020
Print ISSN: 0020-5214
Electronic ISSN: 2523-8957
DOI
https://doi.org/10.1007/s42411-020-0423-y

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