Thermal stability of the low oxygen silicon carbide fibers derived from polycarbosilane
Conference
·
· Ceramic Engineering and Science Proceedings; (United States)
OSTI ID:7293741
SiC fibers with excellent thermal stability have been developed by means of reducing their oxygen content. Polycarbosilane fibers were cured by electron beam irradiation in a stream of helium and were pyrolized in an inert atmosphere. These SiC fibers were continuous, in multifilament form, consisting of Si-1.3C-0.02O by atomic ratio. They had a high tensile strength and elastic modulus of 2.8 GPa and 270 GPa, respectively. At high temperature, the low oxygen SiC fibers were observed to undergo no chemical decompositions and retained good tensile properties. The mechanical properties of the SiC composites reinforced by these SiC fibers were also investigated. 7 refs.
- OSTI ID:
- 7293741
- Report Number(s):
- CONF-920144--
- Journal Information:
- Ceramic Engineering and Science Proceedings; (United States), Journal Name: Ceramic Engineering and Science Proceedings; (United States) Vol. 13:7-8; ISSN 0196-6219; ISSN CESPD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360603 -- Materials-- Properties
BEAMS
CARBIDES
CARBON COMPOUNDS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
COMPOSITE MATERIALS
CURING
DECOMPOSITION
ELASTICITY
ELECTRON BEAMS
ELEMENTS
FIBERS
HYDRIDES
HYDROGEN COMPOUNDS
LEPTON BEAMS
MATERIALS
MECHANICAL PROPERTIES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
OXYGEN
PARTICLE BEAMS
PYROLYSIS
RADIATION CURING
RADIATION EFFECTS
REINFORCED MATERIALS
SILANES
SILICON CARBIDES
SILICON COMPOUNDS
STABILITY
TENSILE PROPERTIES
THERMOCHEMICAL PROCESSES
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360603 -- Materials-- Properties
BEAMS
CARBIDES
CARBON COMPOUNDS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
COMPOSITE MATERIALS
CURING
DECOMPOSITION
ELASTICITY
ELECTRON BEAMS
ELEMENTS
FIBERS
HYDRIDES
HYDROGEN COMPOUNDS
LEPTON BEAMS
MATERIALS
MECHANICAL PROPERTIES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
OXYGEN
PARTICLE BEAMS
PYROLYSIS
RADIATION CURING
RADIATION EFFECTS
REINFORCED MATERIALS
SILANES
SILICON CARBIDES
SILICON COMPOUNDS
STABILITY
TENSILE PROPERTIES
THERMOCHEMICAL PROCESSES