Rapid heating of zirconia nanoparticle-powder compacts by infrared radiation heat transfer |
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| Affiliation: | 1. CEITEC BUT, Brno University of Technology, Czech Republic;2. Institute of Physical Engineering, Brno University of Technology, Czech Republic;3. Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Sweden;4. Institute of Materials Science and Engineering, Brno University of Technology, Czech Republic;1. Univ. Limoges, SPCTS, UMR CNRS 7315, F-87068 Limoges, France;2. LCTL, SPCTS, UMR CNRS 7315, F-87068 Limoges, France;3. ILT&SR, Polish Academy of Science, ul. Okólna 2, 50-422 Wrocław, Poland;1. PPG-CEM, Federal University of São Carlos, São Carlos, Brazil;2. Federal University of São Carlos, Department of Materials Engineering, Rod. Washington Luiz, km 235, São Carlos 13565-905, SP, Brazil;1. Center of Advanced Manufacturing and Material Processing, Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;2. Mechanical and Industrial Engineering Department, College of Engineering, Qatar University, Doha, Qatar;3. Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia;4. Ceramics Technology Group, SIRIM Berhad, Shah Alam 40911, Malaysia;5. Department of Manufacturing and Materials Engineering, International Islamic University Malaysia, 50728, Kuala Lumpur, Malaysia;6. Department of Biomaterials, Faculty of Dental Science, Kyushu University, Fukuoka, Japan;7. Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;1. Zhengzhou Institute of Aeronautical Industry Management, Henan 450046, PR China;2. School of Materials Science and Engineering, Zhengzhou University, Henan 450001, PR China;1. Powder Technology Laboratory, San Diego State University, San Diego, USA;2. Mechanical and Aerospace Engineering, University of California, La Jolla, San Diego, USA;3. MATSYS Inc., Sterling, USA;4. NanoEngineering, University of California, La Jolla, San Diego, USA |
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| Abstract: | Homogeneous rapid sintering of nanoparticle powder compacts of yttria-stabilized zirconia was achieved by the radiation heat transfer. Green bodies were prepared by cold isostatic pressing (CIP) at various pressures providing different porosity of samples before sintering. Pressure-less sintering was performed in air at a heating rate of 100 °C/min up to the 1500 °C/1 min. Scanning electron microscopy, mercury intrusion porosimetry, and Archimedes technique were used to characterize the microstructure and to determine the density of the green and sintered bodies. Contrary to expectations, our results reveal opposite dependence of the green- and sintered densities on the CIP pressure. Since the whole sintering process does not exceed 10 min, to propose what processes are responsible for observed results, our attention is focused on the radiation heat transfer from furnace heating elements into the ceramics. Our arguments are supported by numerical calculations of the electromagnetic field enhancement in/between particles. |
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| Keywords: | Yttria-stabilized zirconia Dielectric nanoparticle Rapid sintering Radiation heat transfer Local electromagnetic field enhancement |
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