Preparing EBCO superconducting targets with uniform phase structure by pressure slip casting |
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| Affiliation: | 1. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China;2. Zhongyuan Critical Metals Laboratory, Zhengzhou, 450001, China;1. Materials Science Lab. (1), Physics Department, Faculty of Science, Cairo University, Giza, Egypt;2. Department of Physics, College of Sciences and Humanities, Shaqra University, Al Quwayiyah, 19257, Saudi Arabia;3. Department of Physics, Faculty of Applied Science, Umm AlQura University, AlZahir Branch, Makkah, 24383, Saudi Arabia;1. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;3. Center for Excellence in Ultra-intense Laser Science, Chinese Academy of Sciences, Shanghai, 201800, China;4. Shanghai Academy of Spaceflight Technology, Shanghai, 201109, China;1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China;2. Collaborative Innovation Center of High-End Equipment Manufacturing Technology, Nanjing University of Science and Technology, Ministry of Industry and Information Technology, PR China;1. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China;2. Inner Mongolia Haite Huacai Technology Co., Ltd, Management Committee Office Building, Jinqiao Economic and Technological Development Zone, Hohhot 010000, China;1. Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351, Bialystok, Poland;2. Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059, Krakow, Poland;3. Faculty of Mechanical Engineering, Bialystok University of Technology, 45C Wiejska Street, 15-351, Bialystok, Poland;4. Institute of Chemistry, University of Silesia, Szkolna 9, 40-007, Katowice, Poland;5. Department of Applied Science and Technology and INSTM RU, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129, Torino, Italy;1. Área Académica de Ciencias de la Tierra y Materiales, Universidad Autónoma del Estado de Hidalgo Mineral de la Reforma, 42184, Hidalgo, Mexico;2. Centro de Investigación e Innovación Tecnológica, Instituto Politécnico Nacional, 02250, Ciudad de México, Mexico |
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| Abstract: | The grain size and phase structure uniformity of europium barium copper oxide (EBCO) superconducting targets would affect the superconducting properties of sputtered film. A uniformly dispersed EBCO slurry was used to prepare high-density green EBCO compacts using slip casting. The effects of milling time and slurry pH on EBCO slurries were studied. Based on the shrinkage data of the EBCO superconducting targets, the densification process was estimated and the apparent activation energy was calculated. The effects of the sintering process on the microstructure and phase composition of EBCO superconducting targets were investigated using scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS). When the sintering temperature was 950–1050 °C, the EBCO superconducting target comprised EuBa2Cu3O7 and CuO, where a new phase Eu2BaCuO5 formed at a sintering temperature of 1100 °C. The Tc and ΔT of the EBCO superconducting target sintered at 950 °C for 30 h were 91.18 K and 2.35 K. |
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| Keywords: | EBCO slurry Sintering process Superconducting targets Grain size |
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