Interfacial studies of whisker and coated fiber-reinforced ceramic-matrix composites. Annual report, May 1989-May 1990

Technical Report · Thu May 31 04:00:00 EDT 1990

OSTI ID:6225215

Brennan, J

The objectives of this program are to characterize the interfacial region in a variety of whisker and coated fiber reinforced glass ceramic matrix composites, and to study how the structure, chemistry, and bonding characteristics of the interface influence composite properties such as strength, toughness, and environmental and thermal stability. During the past year, efforts in the whisker composite area were focused on the investigation of whisker coatings such as carbon and BN on LAS glass ceramic matrix composite properties, fabrication and characterization of calcium aluminosicicate (CAS) matrix/SiC whisker composites, high resolution TEM studies of a variety of techniques, and the evaluation of SiC platelets as an alternate reinforcement to whiskers. Efforts in the coated fiber area were focused on the evaluation of yttria and BN coated NICALON fibers from General Atomics. Results of these studies are presented.

• Research Organization: United Technologies Research Center, East Hartford, CT (USA)
• OSTI ID: 6225215
• Report Number(s): AD-A-226020/6/XAB; CNN: F49620-88-C-0062
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALINE EARTH METALS
BONDING
CALCIUM
CARBIDES
CARBON
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
CHEMISTRY
COATINGS
COMPOSITE MATERIALS
CRYSTALS
DOCUMENT TYPES
ELEMENTS
ENVIRONMENT
FABRICATION
FIBERS
FRACTURE PROPERTIES
GLASS
INTERFACES
JOINING
MATERIALS
MECHANICAL PROPERTIES
METALS
MONOCRYSTALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PROGRESS REPORT
REINFORCED MATERIALS
RESOLUTION
SILICON CARBIDES
SILICON COMPOUNDS
STABILITY
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
WHISKERS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES