Fabrication of fiber reinforced ceramic composites by chemical vapor infiltration

Conference · Sun Jan 01 00:00:00 EST 1984

OSTI ID:6105132

Caputo, A J; Lackey, W J

Ceramic fiber-ceramic matrix composites were prepared using the chemical vapor deposition (CVD) process. Our major goal of significantly reducing the infiltration times was accomplished. We have conceived a process, fabricated hardware, and demonstrated on a laboratory scale a process which permits CVD infiltration of an SiC fibrous preform with either an Si/sub 3/N/sub 4/ or SiC matrix in 2 to 12 h. The process should be applicable to infiltration of fibrous preforms prepared by slurry molding, stacking of layers of cloth, or filament winding. Two types of composites (SiC-Si/sub 3/N/sub 4/ and SiC-SiC) have been produced at densities of about 2.0 Mg/m/sup 3/ which was near the desired range. A scheme has also been conceived whereby the new infiltration process could be used for fabrication of tubes or hollow cylinders. This is an important advance since the ability to fabricate tubes or hollow cylinders would offer the hope that the process could be used for fabrication of toughened, high-strength heat exchanger tubes, heat engine cylinder liners and valve guides. 19 references, 7 figures, 1 table.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6105132
• Report Number(s): CONF-840171-2-Draft; ON: DE85007565
• Resource Relation: Conference: Conference on composites and advanced ceramic materials, Cocoa Beach, FL, USA, 16 Jan 1984; Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
FABRICATION
SILICON CARBIDES
SILICON NITRIDES
BENCH-SCALE EXPERIMENTS
CERAMICS
CHEMICAL VAPOR DEPOSITION
FIBERS
HEAT EXCHANGERS
MECHANICAL PROPERTIES
OPTICAL MICROSCOPY
SCANNING ELECTRON MICROSCOPY
TUBES
CARBIDES
CARBON COMPOUNDS
CHEMICAL COATING
DEPOSITION
ELECTRON MICROSCOPY
MATERIALS
MICROSCOPY
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
SILICON COMPOUNDS
SURFACE COATING
360301* - Composite Materials- Preparation & Fabrication- (-1987)