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Transparent tetragonal-cubic zirconia composite ceramics densified by spark plasma sintering and hot isostatic pressing |
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| Affiliation: | 1. KU Leuven, Department of Materials Engineering, B-3001, Heverlee, Belgium;2. National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan;3. Polycrystal design GmbH, Dresden, Germany;1. Inner Mongolia Key Laboratory of Advanced Ceramics and Device, School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;2. School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China;1. Centre for Materials Engineering and Smart Manufacturing (MERCU), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia;2. Periodontology Department, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia |
| Abstract: | Targeting higher toughness transparent ceramics, tetragonal (3 mol % yttria) and cubic (8 mol % yttria) ZrO2 starting powder mixtures were densified by spark plasma sintering (SPS) in vacuum at 1100 °C and post hot isostatic pressing (HIP) in argon at 1100 °C. The influence of the ultra-fine microstructure and phase composition on the fracture resistance and light transmission in the visible and infra-red range was assessed. Of special interest was the influence of a thermal annealing step in air on the transparency of the SPS and SPS-HIP ceramics. |
| Keywords: | Transparent zirconia Spark plasma sintering Hot isostatic pressing Total forward transmission Ferro-elastic domain switching |
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