Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Dynamic and static fatigue behavior of sintered silicon nitrides

Conference · · Ceram. Eng. Sci. Proc.; (United States)
OSTI ID:5574085
; ;

The dynamic and static fatigue behavior of Kyocera SN220M sintered silicon nitride at 1000 C was studied. Fractographic analysis of the material failing in dynamic fatigue revealed the presence of slow crack growth (SCG) at stressing rates below 41 MPa/min. Under conditions of static fatigue this material also displayed SCG at stresses below 345 MPa. SCG appears to be controlled by microcracking of the grain boundaries. The crack velocity exponent (n) determined from both dynamic and static fatigue tests ranged from 11 to 16. 10 references.

OSTI ID:
5574085
Report Number(s):
CONF-870172-
Journal Information:
Ceram. Eng. Sci. Proc.; (United States), Journal Name: Ceram. Eng. Sci. Proc.; (United States) Vol. 8; ISSN CESPD
Country of Publication:
United States
Language:
English

Similar Records

Evaluation of tensile static, dynamic, and cyclic fatigue behavior for a HIPed silicon nitride at elevated temperatures
Conference · Wed Dec 30 23:00:00 EST 1992 · OSTI ID:10116306
Evaluation of tensile static, dynamic, and cyclic fatigue behavior for a HIPed silicon nitride at elevated temperatures
Conference · Tue Dec 31 23:00:00 EST 1991 · OSTI ID:7187587
Cyclic fatigue behavior and fracture toughness of silicon nitride ceramics sintered with rare-earth oxides
Journal Article · Thu Sep 01 00:00:00 EDT 1994 · Acta Metallurgica et Materialia; (United States) · OSTI ID:6916967

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
CRACK PROPAGATION
CRYSTAL STRUCTURE
FABRICATION
FAILURES
FATIGUE
FRACTOGRAPHY
GRAIN BOUNDARIES
MECHANICAL PROPERTIES
MICROSTRUCTURE
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
SILICON COMPOUNDS
SILICON NITRIDES
SINTERING