Joining of SiC ceramics and SiC/SiC composites

Conference · Thu Jul 01 04:00:00 EDT 1993

OSTI ID:140110

Rabin, B H; Moore, G A ^[1]

---

1. Idaho National Engineering Lab., Idaho Falls, ID (United States)

Reaction processing methods have been employed to fabricate SiC-to-SiC joints for potential use in elevated temperature applications. The processing method involves tape casting thin sheet SiC+C interlayer precursors, clamping the tape between the SiC parts, and infiltrating the joint with molten Si to form a reaction bonded silicon carbide (RBSC) interlayer. Four-point bending strength and fracture toughness have been evaluated at room and elevated temperatures for joined pressureless sintered {alpha}-SiC test specimens. At low temperatures the joint mechanical properties were comparable to those reported in the literature for bulk SiC, while at elevated temperatures the joint behavior was controlled by the properties of the RBSC interlayer.

• Research Organization: Oak Ridge National Lab., TN (United States)
• OSTI ID: 140110
• Report Number(s): ORNL/FMP--93/1; CONF-9305135--; ON: DE94001091
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
CHEMICAL VAPOR DEPOSITION
COMPOSITE MATERIALS
FABRICATION
MECHANICAL PROPERTIES
MICROSTRUCTURE
MORPHOLOGY
SILICON CARBIDES