Tensile creep behaviour of a silicon carbide-based fibre with a low oxygen content

1995 ◽  
Vol 30 (3) ◽  
pp. 661-677 ◽  
Author(s):  
R. Bodet ◽  
X. Bourrat ◽  
J. Lamon ◽  
R. Naslain
Keyword(s):  
Silicon Carbide ◽  
Oxygen Content ◽  
Creep Behaviour ◽  
Tensile Creep ◽  
Low Oxygen

Polymer-Derived Silicon Carbide Fibers with Near-Stoichiometric Composition and Low Oxygen Content

1994 ◽  
Vol 365 ◽  
Author(s):  
Michael D. Sacks ◽  
Gary W. Scheiffele ◽  
Mohamed Saleem ◽  
Gregory A. Staab ◽  
Augusto A. Morrone ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Oxygen Content ◽  
Stoichiometric Composition ◽  
Alpha Phase ◽  
Minor Amount ◽  
Low Oxygen ◽  
Silicon Carbide Fibers ◽  
Fine Grain ◽  
Transmission Electron ◽  
A Minor

ABSTRACTFine-diameter (∼ 10–15 µm), polymer-derived SiC fibers were characterized. The average tensile strength of the fibers was ∼ 2.8 GPa, although some lots had average strengths exceeding 3.5 GPa. Microstructure observations showed that fibers had fine grain sizes (mostly ∼0.05–0.2 µm), high densities (∼3.1–3.2 g'cm3), and small residual pore sizes (≤0.1 µm). Elemental analysis showed that fibers had near-stoichiometric composition. Electron and X-ray diffraction analyses indicated that fibers were primarily beta silicon carbide, with a minor amount of the alpha phase. A small amount of graphitic carbon was detected in some samples using high resolution transmission electron microscopy. The residual oxygen content in the fibers was ≤0.1 wt%. Fibers exhibited good thermomechanical stability, as heat treatment at 1800°C for 4h in argon resulted in only an ∼ 8% decrease in strength.

Polymer-derived silicon carbide fibers with low oxygen content and improved thermomechanical stability

1994 ◽  
Vol 51 (2) ◽  
pp. 145-159 ◽  
Author(s):  
William Toreki ◽  
Christopher D Batich ◽  
Michael D Sacks ◽  
Mohamed Saleem ◽  
Guang J Choi ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Oxygen Content ◽  
Low Oxygen ◽  
Silicon Carbide Fibers
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