Fiber Coating by Sputtering for High Temperature Composites
Abstract
The objective of this activity was to support researchers at the University of California at Santa Barbara in their development of micromechanics models and new or improved high temperature composite systems. This was achieved through the application of sputtered and sol-gel coatings onto monolithic metal and ceramic foils and plates, respectively, as well as high strength monofilament ceramic fibers. The base program aided in the identification and deposition numerous different types of coatings for the several composite systems under evaluation at UCSB. At the conclusion of the base program, promising composite systems were identified for further study and processing via continuous sputtering and sol-gel processing. In addition to providing coated materials to UCSB, P and W also engaged in focused studies of coatings found to be promising by UCSB researchers. The base program study examined as-sputtered Y203 coatings deposited onto various substrates to understand why this coating improves the toughness of Nb-reinforced TiAl. The option program study characterized tungsten and molybdenum coatings applied by hollow cathode magnetron sputtering, and aluminum oxide coatings applied by sol-gel processing. Sputtering, Coating, Debond, Composites fracture energy, Fracture toughness, Indentation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 15, 1992
- Accession Number
- ADA258119
Entities
People
- M. L. Emiliani
Organizations
- Pratt & Whitney