Characterization of tritium breeding ceramic pebbles prepared by melt spraying |
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| Affiliation: | 1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621999, China;2. China Academy of Engineering Physics, Mianyang, 621999, China;1. School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, PR China;2. Department of Physics, Renmin University of China, Beijing, 100872, PR China;1. College of Physical Science and Technology, Sichuan University, Chengdu, 610064, China;2. Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu, 610064, China;3. College of Materials Science and Engineering, Sichuan University, Chengdus, Sichuan 610065, China;1. Department of Ceramic Engineering, National Institute of Technology, Rourkela 769008, India;2. DryProTech Lab, Chemical Engineering, Indian Institute of Technology Gandhinagar, Ahmedabad, Gujarat 382424, India;3. TBM Division, Institute for Plasma Research, Bhat, Gandhinagar 382428, India;1. Karlsruhe Institute of Technology, Institute for Applied Materials, PO Box 3640, 76021, Karlsruhe, Germany;2. Breeding Functional Materials Development Group, Department of Blanket Systems Research, Rokkasho Fusion Institute, Fusion Energy Research and Development Directorate, National Institutes for Quantum and Radiological Science and Technology (QST), Japan;1. School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, PR China;2. Department of Physics, Renmin University of China, Beijing 100872, PR China |
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| Abstract: | Li4SiO4 and Li2TiO3 have long been recognized as two excellent promising tritium breeding materials. In this paper, two kinds of ceramic pebbles, Li4SiO4 pure phase ceramic pebbles and Li4SiO4-xLi2TiO3 multiphase ceramic pebbles were prepared by a melt spraying method at a superheating temperature of 100 ℃ and then tested for their performance. The proportion of pebbles with a particle diameter of 0.8～1.2 mm reached the maximum of 24.02 % when the spraying pressure is 0.04 MPa. The surface of the pebbles prepared by the spraying method was smooth, and the surface roughness was reported for the first time to reach 2.039 μm. The sphericity reached 1.027. When the Ti/Si molar ratio was 0.5, the crush load of the pebbles after heat treatment reached 71.6 N and the thermal conductivity of the materials reached its maximum of 3.098 W/(m·K) at 700 ℃. |
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| Keywords: | Tritium breeding materials Melt spraying NanoBlitz 3D Thermal conductivity Surface roughness |
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