Microhardness and Fracture Toughness Anisotropy in Cubic Zirconium Oxide Single Crystals |
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| Authors: | Antonia Pajares Fernando Guiberteau Arturo Dominguez-Rodriguez Arthur H Heuer |
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| Affiliation: | Departamento de Fisica, Facultado Ciencias, Universidad de Extremadura, 06071 Badajoz, Spain |
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| Abstract: | Vickers and Knoop indentation tests have been used to study the fracture and deformation characteristics of 9.4-mol%-Y2O3-stabilized ZrO2 single crystals. Kc is anisotropic, with values of 1.9 and 1.1 MPa·m1/2 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·m1/2. |
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