Densification behaviour of ceramic powder |
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| Authors: | Susumu Shima Kouji Mimura |
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| Affiliation: | 1. Key Subject Laboratory of National Defense for Radioactive Waste and Environmental Security, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, PR China;2. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan, 621900, PR China;1. Institute of Analytical Chemistry of the CAS, v. v. i., Veveri 97, 602 00 Brno, Czech Republic;2. Pardam, Zizkova 2494, 413 01 Roudnice nad Labem, Czech Republic;1. Thin Film Materials Laboratory, Department of Physics, Shivaji University, Kolhapur 416 004, India;2. Analytical Chemistry and Materials Science Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416 004, India;3. Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan;4. Department of Materials Science and Engineering, Chonnam National University, Gwangju 500 757, South Korea;1. Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;2. Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;1. Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China;2. Key Laboratory of Electronic Information Materials and Devices, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, PR China;3. Hebei Huicong Ecommerce Company Limited, Shijiazhuang, Hebei 050000, PR China |
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| Abstract: | A three-dimensional compaction device has been developed to carry out compaction of a ceramic powder. The details of the device, which provides compaction with various stress ratios, are described. A densification criterion for the powder is proposed; this is similar to that for the case for metal powders, but the role of the hydrostatic stress component appears to be different. Stress-strain rate relations are then derived using the concept of plastic potential; experimental results show that the normality of the strain rate vector to the surface which corresponds to the criterion almost holds. |
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