Texturing of 3Y-TZP zirconia by electrophoretic deposition in a high magnetic field of 17.4 T |
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| Affiliation: | 1. Department of Metallurgy and Materials Engineering (MTM), KU Leuven, Kasteelpark Arenberg 44-bus 2450, B-3001 Heverlee, Belgium;2. Laboratoire National des Champs Magnétiques Intenses (LNCMI), Rue des Martyrs 25, B.P. 166, 38042 Grenoble, France;1. University of Stellenbosch, Department of Process Engineering, Private Bag X1, Matieland 7602, South Africa;2. Aalto University, School of Chemical Technology, Metallurgical Thermodynamics and Modelling Research Group, Espoo, Finland;1. Dpto Física de la Materia Condensada, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Aptdo 644, 48080 Bilbao, Spain;2. Instituto de Ciencia de Materiales, CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, 41092 Sevilla, Spain;3. Dpto Física aplicada II, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Aptdo 644, 48080 Bilbao, Spain;4. Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Sevilla, Apartado 1065, 41012 Sevilla, Spain |
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| Abstract: | Ceramics can be textured during colloidal processing by aligning the suspended particles in a strong magnetic field and retaining this alignment in the green body. Attempts to align tetragonal zirconia particles however were not successful, not even in 12 T magnetic fields. In the current work, monoclinic zirconia was successfully aligned with its (1 0 0) plane perpendicular to the magnetic field direction by electrophoretic deposition (EPD) in a 17.4 T field. Moreover, textured tetragonal zirconia was developed by reactive sintering of undoped pure monoclinic zirconia and co-precipitated 8 mol% yttria-stabilized zirconia. The sintered tetragonal zirconia inherited the alignment of the monoclinic zirconia particle precursor and aligned with its (0 0 1) plane perpendicular to the magnetic field direction. The toughness of the (0 0 1)-oriented 3Y-TZP along the [0 0 1] direction of the textured zirconia was 65% higher than normal to it and 48% higher than the randomly oriented material. |
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| Keywords: | Electrophoretic deposition Zirconia Magnetic alignment Reactive sintering Toughness |
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