Fabrication and characterization of three-dimensional carbon fiber reinforced silicon carbide and silicon nitride composites

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1995.tb08058.x· OSTI ID:131548

Nakano, Kikuo; Kamiya, Akira ^[1]; Nishino, Yoichi ^[2]; Imura, Toru ^[3]; Chou, T W ^[4]

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1. National Industrial Research Inst., Nagoya (Japan)
2. Nagoya Inst. of Tech. (Japan)
3. Aichi Inst. of Tech., Toyota (Japan)
4. Univ. of Delaware, Newark, DE (United States)

Three-dimensional (3D) carbon fiber reinforced SiC and Si{sub 3}N{sub 4} composites have been fabricated using repeated infiltration of an organosilicon slurry under vacuum and pressure. Open porosity of the infiltrated body was reduced from 40% after the first infiltration to approximately 8% after the seventh cycle. Further reduction of open porosity to less than 3% was accomplished by hot-press densification. The maximum values of flexural strength and fracture toughness were, respectively, 260 MPa and 7.3 MPa {center_dot} m{sup 1/2} for C/Si{sub 3}N{sub 4} composites, and 185 MPa and 6 MPa {center_dot} m{sup 1/2} for C/SiC composite.

• Sponsoring Organization: USDOE
• OSTI ID: 131548
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 10 Vol. 78; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BULK DENSITY
CARBON FIBERS
COMPOSITE MATERIALS
ELECTRON MICROPROBE ANALYSIS
FABRICATION
FLEXURAL STRENGTH
FRACTURE PROPERTIES
HOT PRESSING
IMPREGNATION
MICROSTRUCTURE
ORGANIC SILICON COMPOUNDS
POROSITY
SCANNING ELECTRON MICROSCOPY
SILICON CARBIDES
SILICON NITRIDES
X-RAY DIFFRACTION