Premium
Toughening of Ceramics by Circumferential Microcracking
Author(s) -
EVANS A. G.,
FABER K. T.
Publication year - 1981
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1981.tb09877.x
Subject(s) - toughening , materials science , composite material , ceramic , particle (ecology) , particle size , toughness , geology , oceanography , paleontology
An approximate analysis is presented of the toughening induced by the incorporation of second‐phase particles subject to microcrack‐ing. It is demonstrated that the toughening becomes appreciable for a narrow size distribution of particles of appropriate size. The magnitude of the toughening is determined by the mismatch strain (due to thermal contraction incompatibility) and the microfracture resistance of the particle/matrix interface. Implications for designing optimally tough ceramics are presented.