Fabrication and post heat treatment of 0.5Pb (Mg1/3Nb2/3)O3-0.5Pb(Zr0.48Ti0.52)O3 coatings by supersonic plasma spray |
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| Affiliation: | 1. Institute of Surface/Interface Science and Technology, Key Laboratory of Superlight Material and Surface Technology of Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;2. National Key Laboratory for Remanufacturing, Armored Forces Engineering Institute, Beijing 100072, China;1. Division of Physics, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani 12110, Thailand;2. Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;1. Electroceramic Department, Instituto de Cerámica y Vidrio, CSIC, Kelsen 5, 28049, Madrid, Spain;2. Department of Physics, Universitat Politècnica de Catalunya—BarcelonaTech, Jordi Girona 1-3, 08034 Barcelona, Spain;3. Institute of Research in Materials Science and Technology (INTEMA) (CONICET—University of Mar del Plata), J. B. Justo 4302, B7608FDQ Mar del Plata, Argentina;1. Multi-Disciplinary Materials Research Center, Frontier Institute of Science and Technology, Xi''an Jiaotong University, Xi''an, 710054, China;2. Ferrol Physics Group, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan;3. State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China;1. Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;2. Nanotec-KKU Center of Excellence on Advanced Nanomaterials for Energy Production and Storage, Khon Kaen 40002, Thailand;3. Integrated Nanotechnology Research Center (INRC), Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;4. Synchrotron Light Research Institute (Public Organization), 111 University Avenue, Muang District, Nakhon Ratchasima 30000, Thailand;5. Institute of Science, School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;1. College of Physics, Key Laboratory of Photonics Materials and Technology in Universities of Shandong, Qingdao University, Qingdao 266071, PR China;2. Institute for Superconductor and Electronic Materials, Australia Institute of Innovative Materials, University of Wollongong, Wollongong, NSW 2500, Australia;3. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, PR China |
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| Abstract: | Pb(Mg1/3Nb2/3)O3-Pb(Zr0.48Ti0.52)O3 coatings were obtained by supersonic plasma spray. With subsequent heat treatment, compact structure and typical tetragonal phase were obtained, and therefore dielectric performance (εr ≈ 915 at ambient temperature) have been significantly improved. The reason for successfully promote the properties is attributed the elimination of defects, amorphous and pyrochlore phase. Detail analyses were conducted on the variation of defects (pores and micro-cracks) and phase (amorphous, pyrochlore) of coatings after treated at elevated temperature. With the analyses, the existence of pyrochlore phase and ZrO2 are attributed to the incongruent melting behavior. Inhibition of grain growth is attributed to the accumulation of ZrO2 in the grain boundary. The results also suggest the subsequent change from pseudocubic to tetragonal at elevated temperature. |
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| Keywords: | Plasma spraying Thermal annealing PMN-PZT coatings Dielectric performance |
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