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Mechanical and Dielectric Properties of Mullite Fiber‐Reinforced Mullite Matrix Composites with Single Layer CVD SiC Interphases
Author(s) -
Wang Yi,
Cheng Haifeng,
Wang Jun
Publication year - 2014
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12238
Subject(s) - materials science , mullite , composite material , flexural strength , dielectric , chemical vapor deposition , fiber , layer (electronics) , ceramic matrix composite , ceramic , optoelectronics
Mullite fiber‐reinforced mullite matrix (Mu f /Mu) composites were fabricated via the solgel process. Prior to the solgel process, SiC coatings were deposited on the fibers by the chemical vapor deposition ( CVD ) process. Effects of the SiC coatings on the mechanical and dielectric properties of the composites were investigated. The results show that the composites with SiC interphases exhibit evident toughened fracture behavior, and their flexural strength is about 2.37 times that of the as‐received composites. Besides, the complex permittivity of the composites with SiC interphases at X‐band is also increased remarkably due to the existence of carbon in the SiC interphases.