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Ferroelastic Toughening in Bismuth Vanadate
Author(s) -
Baker Theresa L.,
Faber K. T.,
Readey D. W.
Publication year - 1991
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.1151-2916.1991.tb07148.x
Subject(s) - materials science , toughening , nucleation , ferroelasticity , bismuth vanadate , composite material , fracture mechanics , bismuth , ceramic , vanadate , fracture toughness , condensed matter physics , mineralogy , ferroelectricity , metallurgy , chemistry , toughness , thermodynamics , physics , optoelectronics , dielectric , biochemistry , photocatalysis , catalysis
Bismuth vanadate has been used as a model system to examine toughening by stress‐induced domain motion in a ferroelastic materials. Fracture toughnesses in the ferroelastic and paraelastic states have been compared. Toughening and R ‐curve behavior have been observed in the ferroelastic state. Single crystals of BiVO 4 show domain nucleation and propagation under compressive loading and domain generation during fracture. The increase in toughening in the ferroelastic state can be explained by a combination of crack deflection and domain wall motion, the latter contributing to R ‐curve behavior.