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Title: Fabrication of fiber reinforced ceramic composites by chemical vapor infiltration

Abstract

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.

Authors:
;
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (USA)
OSTI Identifier:
6105132
Report Number(s):
CONF-840171-2-Draft
ON: DE85007565
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Conference
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
Subject:
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)

Citation Formats

Caputo, A J, and Lackey, W J. Fabrication of fiber reinforced ceramic composites by chemical vapor infiltration. United States: N. p., 1984. Web.
Caputo, A J, & Lackey, W J. Fabrication of fiber reinforced ceramic composites by chemical vapor infiltration. United States.
Caputo, A J, and Lackey, W J. Sun . "Fabrication of fiber reinforced ceramic composites by chemical vapor infiltration". United States.
@article{osti_6105132,
title = {Fabrication of fiber reinforced ceramic composites by chemical vapor infiltration},
author = {Caputo, A J and Lackey, W J},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Conference:
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