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Effect of initial particle size on grain microstructure of textured ferroelectric ceramics: A phase-field method and brush technique
Affiliation:1. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China;2. College of Information Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, PR China;1. Department of Mechanical Engineering, the University of Alberta, Edmonton, AB T6G 2R3, Canada;2. Weapons and Materials Research Directorate, Combat Capabilities Development Command Army Research Laboratory, Aberdeen Proving Ground, MD 21005, USA;1. Key Laboratory of Multifunctional Materials and Structures, Ministry of Education, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi''an 710049, Shaanxi, China;2. Micro-optoelectronic Systems Laboratories, Xi’an Technological University, Xi’an, Shaanxi 710032, China;3. School of Material Science and Energy Engineering, Foshan University, Foshan, Guangdong 528000, China;4. School of Electronic and Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;5. School of Electronics and Communication Engineering, Lovely Professional University, Jalandhar, Punjab, India;6. Telecommunication and Materials Science and Engineering of Laboratory (LOCEM), Physics Department, Federal University of Ceará (UFC), Pici Campus, Fortaleza, Ceará 60455–760, Brazil;7. Telecommunication Engineering Department, Federal University of Ceará (UFC), Fortaleza, Ceará 60755–640, Brazil, Physics Department, Federal University of Ceará (UFC), Pici Campus, Fortaleza, Ceará 60455–760, Brazil;8. Physics Department, Faculty of Science, Tanta University, Al-Geish st., Tanta 31527, Egypt;9. Functional Materials and Devices Laboratory, Department of Materials Science and Engineering, University of Sheffield, S1 3JD, UK;1. Laboratory of Advanced Multicomponent Materials, School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, China;2. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;1. Division of Nonmetallic-Inorganic Materials, Department of Materials and Earth Sciences, Technical University of Darmstadt, 64287 Darmstadt, Germany;2. Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria;1. School of Materials Science and Engineering, Shandong university of technology, Zibo 255000, Shandong, China;2. Shandong Industrial Ceramics Research & Design Institute Co., Ltd., Zibo 255000, Shandong, China;3. School of Materials Science and Engineering, Harbin Institute of Technology (Weihai), Weihai 264200, Shandong, China;4. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China
Abstract:A phase-field model was employed to simulate the grain microstructure evolution of the textured ceramics. Textured KSr2Nb5O15 (KSN) ceramics were chosen as the research object and prepared by using acicular KSN particles as raw materials. A method combining the brush technique with the rolling process was proposed for the directional arrangement of the acicular particles. The effects of the initial particle length distribution and diameter on the grain growth behavior and electrical properties were investigated. It was found the influence of the initial particle length distribution on the grain growth rate mainly depended on its diameter. The use of coarse particles was beneficial to obtain a microstructure with a strongly anisotropic morphology and homogeneous grain size. The obtained KSN ceramics exhibited a high piezoelectric constant d33 of 68 pC/N and Curie temperature of 120 ℃, which was closely related to the grain microstructure.
Keywords:Textured ceramics  Phase field simulation  Tape casting  Ferroelectric
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