Synthesis, characterization and tensile strength of CVI C/SiC, SiC/SiC, SiC/B4C, and C/B4C composites

Conference · Thu Oct 01 00:00:00 EDT 1992 · Ceramic Engineering and Science Proceedings; (United States)

OSTI ID:7039549

Kmetz, M A; Laliberte, J M; Suib, S L; Galasso, F S

CVD of carbon (derived from two different precursors) on SiC and B4C matrices has been employed to yield single-strand unidirectional composites. The tensile strength of carbon deposited via pyrolysis of propylene was higher than that of methane pyrolysis-deposited carbon matrices. A novel CVD boron-carbon interface has also been developed which does not degrade carbon yarns and yields composites exhibiting high strengths; these strength levels were, moreover, highly resistant to long-duration, high-temperature annealing. Coated fibers and composites have been characterized by SEM and XRD. 8 refs.

• OSTI ID: 7039549
• Report Number(s): CONF-920144-; CODEN: CESPD; TRN: 92-027532
• Journal Information: Ceramic Engineering and Science Proceedings; (United States), Vol. 13:9-10; Conference: 16. annual conference on composites, materials, and structures, Cocoa Beach, FL (United States), 13-16 Jan 1992; ISSN 0196-6219
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORON CARBIDES
MICROSTRUCTURE
TENSILE PROPERTIES
VAPOR DEPOSITED COATINGS
CARBON
CHEMICAL VAPOR DEPOSITION
COMPOSITE MATERIALS
FABRICATION
SILICON CARBIDES
ANNEALING
COATINGS
COMPARATIVE EVALUATIONS
FIBERS
METHANE
PROPYLENE
PYROLYSIS
SCANNING ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ALKANES
ALKENES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHEMICAL COATING
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DECOMPOSITION
DEPOSITION
DIFFRACTION
ELECTRON MICROSCOPY
ELEMENTS
EVALUATION
HEAT TREATMENTS
HYDROCARBONS
MATERIALS
MECHANICAL PROPERTIES
MICROSCOPY
NONMETALS
ORGANIC COMPOUNDS
SCATTERING
SILICON COMPOUNDS
SURFACE COATING
THERMOCHEMICAL PROCESSES
360601* - Other Materials- Preparation & Manufacture
360602 - Other Materials- Structure & Phase Studies
360603 - Materials- Properties