Premium
Oxidation of SiC f /SiC‐HfB 2 Composites under Laser Heating
Author(s) -
Carney Carmen,
Leslie Clifford,
Jones Eric
Publication year - 2015
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.12453
Subject(s) - materials science , composite material , ceramic , ceramic matrix composite , slurry , fiber , silicon carbide , laser , physics , optics
Ceramic matrix composites with Sylramic TM and CG Nicalon TM SiC fibers and SiC‐HfB 2 matrices derived from a combination of polymer‐derived SiC ceramic and HfB 2 particulate slurries were prepared. The composites were tested for oxidation resistance by laser heating at 2 MW/m 2 to achieve temperatures near 1600°C. The oxidation resistance was compared between uncoated CG Nicalon TM and BN ‐coated Sylramic TM fiber‐based composites. Oxidation resulted in precipitated nano‐sized HfO 2 independent of the fibers and fiber coatings.