Mass transport measurements and modeling for chemical vapor infiltration
- Georgia Inst. of Tech., Atlanta, GA (United States). School of Materials Science and Engineering
This project involves experimental and modeling investigation of densification behavior and mass transport in fiber preforms and partially densified composites, and application of these results to chemical vapor infiltration (CVI) process modeling. This supports work on-going at ORNL in process development for fabrication of ceramic matrix composite (CMC) tubes. Tube-shaped composite preforms are fabricated at ORNL with Nextel{trademark} 312 fiber (3M Corporation, St. Paul, MN) by placing and compressing several layers of braided sleeve on a tubular mandrel. In terms of fiber architecture these preforms are significantly different than those made previously with Nicalon{trademark} fiber (Nippon Carbon Corp., Tokyo, Japan) square weave cloth. The authors have made microstructure and permeability measurements on several of these preforms and a few partially densified composites so as to better understand their densification behavior during CVI.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- OSTI ID:
- 330664
- Report Number(s):
- CONF-9705115-PROC.; ORNL/FMP-97/1; ON: DE98007329; TRN: IM9915%%181
- Resource Relation:
- Conference: 11. annual conference on fossil energy materials, Knoxville, TN (United States), 20-22 May 1997; Other Information: PBD: Dec 1997; Related Information: Is Part Of Proceedings of the eleventh annual conference on fossil energy materials; Judkins, R.R. [comp.]; PB: 419 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Structure and properties of braided sleeve preforms for chemical vapor infiltration
Measurement of gas transport through fiber preforms and densified composites for chemical vapor infiltration