Properties of RBSN and RBSN-SiC composites. [Reaction Bonded Silicon Nitride]

Conference · Wed Aug 01 00:00:00 EDT 1990 · Ceramic Engineering and Science Proceedings; (USA)

OSTI ID:6314044

Lightfoot, A; Ker, H L; Haggerty, J S; Ritter, J E

Strengths, fracture toughnesses, hardnesses, and dimensional changes have been measured for RBSN and RBSN/SiC composites. Samples were made from mixtures of Si and either Si- or C-rich SiC powders. For pure, 75 pct dense RBSN dispersed with octanol, strengths up to 858 MPa have been achieved. Improved strengths result from a combination of microstructural perfection and increased fracture toughness. The mechanical properties of the composites were approximately equal to those of methanol processed RBSN but not quite equal to those of the octanol-processed RBSN. Results are discussed in terms of observed microstructural features. 32 refs.

• OSTI ID: 6314044
• Report Number(s): CONF-900160--
• Journal Information: Ceramic Engineering and Science Proceedings; (USA), Journal Name: Ceramic Engineering and Science Proceedings; (USA) Vol. 11; ISSN 0196-6219; ISSN CESPD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
BONDING
CARBIDES
CARBON COMPOUNDS
CERAMICS
COMPOSITE MATERIALS
CRYSTAL STRUCTURE
FABRICATION
FRACTURE PROPERTIES
HARDNESS
JOINING
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
METALLURGY
MICROSTRUCTURE
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
POWDER METALLURGY
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES