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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Fleming, Leigh
Sheffield Hallam University
in Cooperation with on an Cooperation-Score of 37%
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Publications (5/5 displayed)
- 2022Reaction Sintering of Biocompatible Al2O3-hBN Ceramicscitations
- 2017Impact of purification on physicochemical, surface and functional properties of okra biopolymercitations
- 2014Defect Detection in Thin-film Photovoltaics; Towards Improved Efficiency and Longevitycitations
- 2014Development of the basis for in process metrology for roll to roll production of flexible photo voltaics
- 2013Development of a synovial fluid analogue with bio-relevant rheology for wear testing of orthopaedic implantscitations
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article
Reaction Sintering of Biocompatible Al2O3-hBN Ceramics
Abstract
<p>Biocompatible Al2O3-hBN ceramic was sintered from AlN and B2O3 precursors by reaction hot pressing at 1750 °C and 30 MPa for 8 min. The ceramic was compared to nonreactive (NR) one sintered from Al2O3 and BN under the same sintering conditions. The NR ceramic possesses 9% porosity as opposed to only 2% porosity for the reaction sintered Al2O3-hBN. The reaction sintered ceramic has crack resistance in the region of 5.0 ± 0.1 MPa·m1/2, which is approximately 20% higher than previously reported pure Al2O3 or Al2O3-hBN sintered without reaction support. The higher amount of hBN in the developed Al2O3-hBN material (27 vol %) facilitates hardness lowering to the region of 6 GPa, which is closer to the bone hardness and makes the ceramic machinable. Reaction sintering of the Al2O3-hBN composite opens a new area of creation and formation of load-bearing Al2O3-hBN ceramic bioimplants. </p>