COMPARISON OF FRACTURE-TOUGHNESS MEASURING METHODS APPLIED ON SILICON-NITRIDE CERAMICS

Authors
RUDNAYOVA E DUSZA J KUPKOVA M
Citation
E. Rudnayova et al., COMPARISON OF FRACTURE-TOUGHNESS MEASURING METHODS APPLIED ON SILICON-NITRIDE CERAMICS, Journal de physique. IV, 3(C7), 1993, pp. 1273-1276
Citations number
15
Categorie Soggetti
Physics
Journal title
Journal de physique. IV → ACNP
ISSN journal
11554339
Volume
3
Issue
C7
Year of publication
1993
Part
2
Pages
1273 - 1276
Database
ISI
SICI code
1155-4339(1993)3:C7<1273:COFMMA>2.0.ZU;2-7
Abstract
Different fracture toughness testing methods on unreinforced and with Si3N4 whiskers reinforced silicon nitride ceramics were compared. The results revealed that in the reinforced ceramics the K-IC with the inc reasing of the crack size, which indicates a rising R-curve behaviour in this system. Using IF testing method equations given by Niihara and by Shetty proved to have the nearest values to these achieved using S ENB in both investigated systems.