Improved process for the preparation of fiber-reinforced ceramic composites by chemical vapor deposition

Patent · 07 September 1984

OSTI ID:5718383

Lackey, Jr, W J; Caputo, A J

A specially designed apparatus provides a steep thermal gradient across the thickness of 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.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• Assignee: Dept. of Energy
• Patent Number(s): None
• Application Number: ON: DE85011584
• OSTI ID: 5718383
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360301* -- Composite Materials-- Preparation & Fabrication-- (-1987)
CERAMICS
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COMPOSITE MATERIALS
DEPOSITION
FIBERS
MATERIALS
REINFORCED MATERIALS
SURFACE COATING
TEMPERATURE GRADIENTS