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Slurry infiltration of 3-D woven composites

Conference · · Ceramic Engineering and Science Proceedings; (United States)
OSTI ID:7110540

Sol-gel techniques have been used to infiltrate fibrous preforms at room temperature. However, due to large shrinkage during processing, even many infiltration and heat treatment cycles fail to achieve dense composites. Slurries of alumina and silica powders were infiltrated into 3D woven preforms of mullite based fiber in order to investigate the effects of particle size and size distribution on packing. A well dispersed slurry containing agglomerate-free, submicron-sized particles significantly increased infiltration efficiency and resulted in a high packing density. 7 refs.

OSTI ID:
7110540
Report Number(s):
CONF-920144--
Journal Information:
Ceramic Engineering and Science Proceedings; (United States), Journal Name: Ceramic Engineering and Science Proceedings; (United States) Vol. 13:9-10; ISSN 0196-6219; ISSN CESPD
Country of Publication:
United States
Language:
English