Interface modification in Nicalon/SiC composites
Improved mechanical behavior in Nicalon/SiC composites has been produced by controlling the interfacial bond through coating of the fibers with thin films before densification. Varying degrees of bonding have been achieved with different coating materials and film thicknesses. The effects of bonding on fiber pull-out, and thus mechanical behavior, have been investigated. Fiber-matrix bond strengths have been semi-quantitatively evaluated using indentation methods and a simple tensile test. Electron microscopy and surface analysis were utilized to characterize interface compositions and structures. These results have been used to further examine fiber-matrix interfaces and their influence on mechanical behavior. 37 refs., 9 figs., 1 tab.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5000714
- Report Number(s):
- CONF-880118-5; ON: DE88009708
- Country of Publication:
- United States
- Language:
- English
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Characterization and control of the fiber-matrix interface in ceramic matrix composites
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Related Subjects
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
AUGER ELECTRON SPECTROSCOPY
CARBIDES
CARBON COMPOUNDS
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COATINGS
COMPOSITE MATERIALS
DEPOSITION
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
FABRICATION
FIBERS
FLEXURAL STRENGTH
FRACTURE PROPERTIES
INTERFACES
MATERIALS
MECHANICAL PROPERTIES
MICROSCOPY
REINFORCED MATERIALS
SILICON CARBIDES
SILICON COMPOUNDS
SPECTROSCOPY
SURFACE COATING