Fabrication of fiber-reinforced composites by chemical vapor infiltration

Conference · Tue Aug 01 00:00:00 EDT 1995

OSTI ID:416487

Matlin, W M ^[1]; Stinton, D P; Besmann, T M ^[2]

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1. Univ. of Tennessee, Knoxville, TN (United States)
2. Oak Ridge National Lab., TN (United States)

A two-step forced chemical vapor infiltration process was developed that reduced infiltration times for 4.45 cm dia. by 1.27 cm thick Nicalon{sup +} fiber preforms by two thirds while maintaining final densities near 90 %. In the first stage of the process, micro-voids within fiber bundles in the cloth were uniformly infiltrated throughout the preform. In the second stage, the deposition rate was increased to more rapidly fill the macro-voids between bundles within the cloth and between layers of cloth. By varying the thermal gradient across the preform uniform infiltration rates were maintained and high final densities achieved.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• OSTI ID: 416487
• Report Number(s): ORNL/FMP-95/1; CONF-9505204-; ON: DE96001412; TRN: 96:006558-0012
• Resource Relation: Conference: 9. annual conference on fossil energy materials, Oak Ridge, TN (United States), 16-18 May 1995; Other Information: PBD: Aug 1995; Related Information: Is Part Of Proceedings of the ninth annual conference on fossil energy materials; Cole, N.C.; Judkins, R.R. [comps.]; PB: 522 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SILICON CARBIDES
DENSITY
VOIDS
CHEMICAL VAPOR DEPOSITION
TIME DEPENDENCE
SILICON CHLORIDES
METHYL CHLORIDE