Fabrication of stable Al2O3 slurries and dense green bodies using soft-energy milling process |
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| Authors: | Y Hotta K Tsunekawa T Shirai K Sato M Yasuoka K Watari |
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| Affiliation: | 1. “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iasi, Romania;2. Department of Natural and Synthetic Polymers, “Gh. Asachi” Technical University, Iasi, Romania;3. Centre of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iasi, Romania;1. Department of Chemical and Materials Engineering, Hefei College, Hefei City 230601, PR China;2. School of Chemistry and Biological Engineering, Hezhou University, Hezhou 542899, PR China;3. Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences, Hefei City 230601, PR China;4. Hefei Lucky & Technology Industry Co. Ltd., Hefei City 230041, PR China;1. Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, 522 510, A.P., India;2. Institute of Optoelectronics and Measuring Systems, Electrical Engineering Department, Czestochowa University of Technology, Aleja Armii Krajowej 17/19, Czestochowa, Poland;3. Institute of Electronics, Military University Technology, 00-908, Kaliskiego 2, Warsaw, Poland;1. Faculty of Physics, National University of Uzbekistan, Vuzgorodok, Tashkent 100174, Uzbekistan;2. Department of Physics, San Jose State University, retired, San Jose, CA 95192, USA;3. Department of Physics, Andrews University, Berrien Springs, MI 49104, USA;4. School of Physics and Technology, Wuhan University, 430072 Wuhan, China;5. Bukhara State University, Bukhara 200118, Uzbekistan;1. Physical Chemistry, Department of Chemistry, Lund University, 22100 Lund, Sweden;2. Adolphe Merkle Institute, University of Fribourg, 1723 Marly, Switzerland;3. Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland;4. BASF SE, Modelling and Formulation Research, Formulation Platform, 67056 Ludwisghafen am Rhein, Germany;1. Institute of Physical Technical and Radioengineering Measurements (VNIIFTRI) Russia, 141570 Mendeleyevo, region;2. Scientific and Technological Center of Unique Instrumentation, Russian Academy of Sciences Russia, 117342 Moscow, ul. Butlerova, 15 |
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| Abstract: | Wet-jet milling and planetary homogenizing processes as soft-energy milling methods were employed as a novel method to prepare stable Al2O3 slurries. The viscosity of slurries prepared from the soft-energy milling was constant and stable for long time, as compared to ball-milled slurries. Though Al2O3 particles surface after ball milling yielded more hydroxyl groups, Al2O3 particles surface after the soft-energy milling was similar state to raw particles surface. Relative density of the green bodies prepared from the wet-milled slurries was about 67% and was independent on the slurry solid content. On the other hand, the relative density of the green bodies prepared from the ball-milled slurries increased with increasing solid content. Linear shrinkage of the sintered bodies prepared from the soft-energy milled slurries was independent of the slurry solid content, whereas that of the sintered bodies prepared from the ball-milled slurries increased with decreasing solid content. |
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