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  • NONMETALLIC MATERIALS  (2)
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  • 1
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    Unknown
    Silicon carbide filaments - Microstructure (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The microstructure of chemically vapor deposited silicon carbide filaments has been examined using transmission electron microscopy. The filament bulk consisted of heavily faulted columnar subgrains of beta-SiC which were preferentially oriented such that 1 1 1 planes were parallel to the surface of the carbon fiber substrate. The protective coating on the filament surface was characterized by several microstructurally distinct layers, all of which consisted primarily of carbon. The first layers of the coating contained small crystallites of SiC in addition to turbostratic carbon, while the outer layers showed no evidence of SiC. Implications of the filament microstructure with respect to mechanical properties are discussed.
    Keywords: NONMETALLIC MATERIALS
    Type: Journal of Materials Science (ISSN 0022-2461); 20; 1953-196
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Investigation of diffusion barrier materials on silicon carbide filaments (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The formation of diffusion barrier materials on SiC filaments is discussed. The filaments possess a carbon-rich surface layer and, consequently, are difficult to wet by molten Al and tend to react with the molten metal, degrading filament strength. Characterization of the filament with various CVD barrier materials is reported.
    Keywords: NONMETALLIC MATERIALS
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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