Properties of zirconia-toughened-alumina prepared via powder processing and colloidal processing routes

Rafferty, Aran; Alsebaie, A.M.; Olabi, Abdul–Ghani; Prescott, Tim

doi:10.1016/j.jcis.2008.10.010

Cited by 30 publications

(22 citation statements)

References 16 publications

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“…8 shows Young's modulus (E) as a function of the ZrO 2 content for Al 2 O 3 and the different composites. The expected modulus were calculated by the rule of mixture, using the values of 390 GPa for Al 2 O 3 and 210 GPa for t-ZrO 2 [12]; these calculated values are also included in Fig. 8.…”

Section: Densification and Grain Growthmentioning

confidence: 99%

Three different alumina–zirconia composites: Sintering, microstructure and mechanical properties

Pulgarín¹,

Albano²

2015

Materials Science and Engineering: A

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Section: Densification and Grain Growthmentioning

confidence: 99%

Three different alumina–zirconia composites: Sintering, microstructure and mechanical properties

Pulgarín¹,

Albano²

2015

Materials Science and Engineering: A

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“…However, the performance of ZTA composites is deeply affected by their microstructural features [5,6,7,8]. Indeed, a good dispersion of zirconia in the alumina matrix is a key issue to produce reliable biomedical devices with the required mechanical behavior and free from low temperature degradation (LTD), as zirconia aggregates can lead to localized aging phenomena [8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Optimized Slurries for Spray Drying: Different Approaches to Obtain Homogeneous and Deformable Alumina-Zirconia Granules

et al. 2013

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Spray drying is widely used for producing granulated feed materials for compaction process, which is the current industrial method for manufacturing alumina-zirconia femoral heads. The optimization of the granules compaction behavior requires the control of the slurry rheology. Moreover, for a dual-phase ceramic suspension, the even phase distribution has to be kept through the atomization step. Here we present two approaches addressing the key issues involved in the atomization of a composite system. Alumina-10 vol % zirconia powders were prepared by either a powder mixing route, or by the surface modification of a commercial α-alumina powder with a zirconium salt. Slurries from both powders were spray dried. The correlation between slurry rheology and pH, granules morphology and sintered microstructures was here investigated and discussed on the ground of the two feed materials characteristics. The processing conditions were optimized to obtain dense and homogeneous alumina-zirconia micro-nano composites by both processing routes.

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“…Namely, tetragonal precipitates must only transform due to stress (Rafferty et al, 2009). However, the size of tetragonal precipitates must be minimized so that they do not spontaneously transform within the cubic zirconia matrix.…”

Section: Crackmentioning

confidence: 99%

Toughening mechanisms in dental composites

Abi

2015

Toughening Mechanisms in Composite Materials

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Properties of zirconia-toughened-alumina prepared via powder processing and colloidal processing routes

Cited by 30 publications

References 16 publications

Three different alumina–zirconia composites: Sintering, microstructure and mechanical properties

Three different alumina–zirconia composites: Sintering, microstructure and mechanical properties

Optimized Slurries for Spray Drying: Different Approaches to Obtain Homogeneous and Deformable Alumina-Zirconia Granules

Toughening mechanisms in dental composites

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