Strengthening of a sintered silicon nitride by a post-fabrication heat treatment

Journal Article · Thu Apr 01 00:00:00 EST 1982 · J. Am. Ceram. Soc.; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1982.tb10415.x· OSTI ID:6734199

Clarke, D R; Lange, F F; Schnittgrund, G D

The strength improvement of an injection-molded and sintered silicon nitride ceramic (15.5 wt% Y/sub 2/O/sub 3/+ 10.1 wt% produced by an oxidation heat treatment at 1500/degree/C is reported. The ceramic retains its strength after prolonged intermediate temperature exposure in air, whereas the untreated material suffers various degrees of cracking. 6 refs.

• Research Organization: Rockwell Int, Thousand Oaks, California, USA
• OSTI ID: 6734199
• Journal Information: J. Am. Ceram. Soc.; (United States), Vol. 65:4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SILICON NITRIDES
HEAT TREATMENTS
MECHANICAL PROPERTIES
CERAMICS
CRACKS
OXIDATION
SINTERED MATERIALS
VERY HIGH TEMPERATURE
YTTRIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
MATERIALS
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360203 - Ceramics
Cermets
& Refractories- Mechanical Properties