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Title: Process for the preparation of fiber-reinforced ceramic composites by chemical vapor deposition

Abstract

A chemical vapor deposition (CVD) process for preparing fiber-reinforced ceramic composites. A specially designed apparatus provides a steep thermal gradient across the thickness of a fibrous preform. A flow of gaseous ceramic matrix material is directed into the fibrous preform at the cold surface. The deposition of the matrix occurs progressively from the hot surface of the fibrous preform toward the cold surface. Such deposition prevents the surface of the fibrous preform from becoming plugged. As a result thereof, the flow of reactant matrix gases into the uninfiltrated (undeposited) portion of the fibrous preform occurs throughout the deposition process. The progressive and continuous deposition of ceramic matrix within the fibrous preform provides for a significant reduction in process time over known chemical vapor deposition processes.

Inventors:
 [1];  [2]
  1. (Oak Ridge, TN)
  2. (Knoxville, TN)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
865801
Patent Number(s):
US 4580524
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; preparation; fiber-reinforced; ceramic; composites; chemical; vapor; deposition; cvd; preparing; specially; designed; apparatus; provides; steep; thermal; gradient; thickness; fibrous; preform; flow; gaseous; matrix; material; directed; cold; surface; occurs; progressively; hot; prevents; becoming; plugged; result; reactant; gases; uninfiltrated; undeposited; portion; throughout; progressive; continuous; significant; reduction; time; processes; fiber-reinforced ceramic; thermal gradient; specially designed; apparatus provides; ceramic matrix; significant reduction; ceramic composites; matrix material; ceramic composite; chemical vapor; vapor deposition; deposition process; deposition processes; reinforced ceramic; process time; /118/427/

Citation Formats

Lackey, Jr., Walter J., and Caputo, Anthony J. Process for the preparation of fiber-reinforced ceramic composites by chemical vapor deposition. United States: N. p., 1986. Web.
Lackey, Jr., Walter J., & Caputo, Anthony J. Process for the preparation of fiber-reinforced ceramic composites by chemical vapor deposition. United States.
Lackey, Jr., Walter J., and Caputo, Anthony J. Wed . "Process for the preparation of fiber-reinforced ceramic composites by chemical vapor deposition". United States. https://www.osti.gov/servlets/purl/865801.
@article{osti_865801,
title = {Process for the preparation of fiber-reinforced ceramic composites by chemical vapor deposition},
author = {Lackey, Jr., Walter J. and Caputo, Anthony J.},
abstractNote = {A chemical vapor deposition (CVD) process for preparing fiber-reinforced ceramic composites. A specially designed apparatus provides a steep thermal gradient across the thickness of a fibrous preform. A flow of gaseous ceramic matrix material is directed into the fibrous preform at the cold surface. The deposition of the matrix occurs progressively from the hot surface of the fibrous preform toward the cold surface. Such deposition prevents the surface of the fibrous preform from becoming plugged. As a result thereof, the flow of reactant matrix gases into the uninfiltrated (undeposited) portion of the fibrous preform occurs throughout the deposition process. The progressive and continuous deposition of ceramic matrix within the fibrous preform provides for a significant reduction in process time over known chemical vapor deposition processes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}

Patent:

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