Development of ceramic matrix composites for application in the ceramic technology for advanced heat engines: Final report

Technical Report · Wed Jun 01 04:00:00 EDT 1988

OSTI ID:6911570

Yeh, H C; Schienle, J; Karasek, K; Bradley, S

A technology base for fabrication of SiC whisker-reinforced Si/sub 3/N/sub 4/ composites was developed. The feasibility of fabricating near-netshape SiC-Si/sub 3/N/sub 4/ using procedures amenable to production was demonstrated. Green composite parts containing up to 40 percent SiC whiskers were prepared by slip casting and were densified to greater than 3.2 gm/cc using both metal and glass encapsulation HIP processing. Improvements in both strength and fracture toughness were achieved in Si/sub 3/N/sub 4/ through SiC whisker reinforcement. The strength, toughness, and elastic and thermal properties were correlated with whisker chemistry, whisker loading, processing parameters, and microstructure. 20 refs, 75 figs, 22 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA); Garrett Corp., Torrance, CA (USA). Ceramic Components Div.
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6911570
• Report Number(s): ORNL/Sub-85-22008/1; ON: DE88015329
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
36 MATERIALS SCIENCE
360200 -- Ceramics
Cermets
& Refractories
CARBIDES
CARBON COMPOUNDS
CERAMICS
COMPOSITE MATERIALS
DATA
DIAGRAMS
DOCUMENT TYPES
EFFICIENCY
ENGINEERING DRAWINGS
ENGINES
FABRICATION
FLOWSHEETS
HEAT ENGINES
INFORMATION
MACHINERY
MATERIALS
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
PHYSICAL PROPERTIES
PNICTIDES
PROGRESS REPORT
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
TURBINES
TURBOMACHINERY