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Oxidation of ZrB 2 Ceramics Containing SiC as Particles, Whiskers, or Short Fibers
Author(s) -
Silvestroni Laura,
Sciti Diletta
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04726.x
Subject(s) - whiskers , materials science , scanning electron microscope , whisker , composite material , ceramic , degradation (telecommunications) , monocrystalline whisker , thermal stability , silicon carbide , diffraction , chemical engineering , telecommunications , computer science , engineering , physics , optics
The thermal stability of ZrB 2 ‐based composites containing SiC ‐chopped fibers was tested in a bottom‐up furnace at 1200°C, 1500°C, and 1700°C for 30 min. The oxidation behavior was studied by X ‐ray diffraction, scanning electron microscopy, and weight gain. The degradation induced by oxidation was also evaluated considering the strength decrease of oxidized bars. Baseline ZrB 2 ‐composites containing the same amount of SiC particles or SiC whiskers were tested in the same conditions for comparison.