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Microhardness and Fracture Toughness Anisotropy in Cubic Zirconium Oxide Single Crystals
Author(s) -
Pajares Antonia,
Guiberteau Fernando,
DominguezRodriguez Arturo,
Heuer Arthur H.
Publication year - 1988
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.1151-2916.1988.tb05933.x
Subject(s) - materials science , knoop hardness test , indentation , fracture toughness , anisotropy , composite material , indentation hardness , enhanced data rates for gsm evolution , deformation (meteorology) , zirconium , fracture (geology) , vickers hardness test , crystallography , metallurgy , microstructure , optics , chemistry , telecommunications , physics , computer science
Vickers and Knoop indentation tests have been used to study the fracture and deformation characteristics of 9.4‐mol%‐Y 2 O 3 ‐stabilized ZrO 2 single crystals. K c is anisotropic, with values of 1.9 and 1.1 MPa·m 1/2 for radial cracks propagating along (100) and (110), respectively. The toughness for these two orientations was also determined using the single‐edge notched‐beam geometry, and yielded values of 1.9 and 1.5 MPa·m 1/2 .