Silicon nitride having a high tensile strength

Patent · Mon Nov 04 23:00:00 EST 1996

OSTI ID:392647

Pujari, V K; Tracey, D M; Foley, M R; Paille, N I; Pelletier, P J; Sales, L C; Willkens, C A; Yeckley, R L

A silicon nitride ceramic is disclosed comprising: (a) inclusions no greater than 25 microns in length, (b) agglomerates no greater than 20 microns in diameter, and (c) a surface finish of less than about 8 microinches, said ceramic having a four-point flexural strength of at least about 900 MPa. 4 figs.

• Research Organization: Lockheed Martin Energy Syst Inc
• DOE Contract Number: AC05-84OR21400
• Assignee: Saint-Gobain/Norton Industrial Ceramics Corp., Worcester, MA (United States)
• Patent Number(s): US 5,571,760/A/
• Application Number: PAN: 8-324,937
• OSTI ID: 392647
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
FABRICATION
FLEXURAL STRENGTH
MECHANICAL PROPERTIES
MICROSTRUCTURE
SILICON NITRIDES
TENSILE PROPERTIES