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Electrospinning of Y2O3- and MgO-stabilized zirconia nanofibers and characterization of the evolving phase composition and morphology during thermal treatment |
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| Affiliation: | 1. Graduate School of Science and Technology, Kumamoto University, Kurokami, Kumamoto 860-8555, Japan;2. Institute for Study of the Earth׳s Interior, Okayama University, Misasa, Tottori 682-0193, Japan;3. Division of Physical Sciences, National Museum of Nature and Science, Tsukuba, Ibaraki 305-0005, Japan;1. School of Energy Science and Engineering, University of Electronic Science and Technology of China, 2006 Xiyuan Ave, West Hi-Tech Zone, 611731, Chengdu, Sichuan, PR China;2. Department of Energy Sciences, Faculty of Engineering, Lund University, P.O. Box 118, SE-221 00, Lund, Sweden;3. College of Chemistry and Environmental Engineering, Shenzhen University, 3688 Naihai Avenue, Nanshan District, Shenzhen, PR China;1. State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China;2. Jinan Military Representative Office of Nanjing Military Representative Bureau, Army, PLA, No. 141 Weijiu Road, Huaiyin District, Jinan 250031, PR China;1. Institute of Textile Chemistry and Chemical Fibers, Körschtalstraße 26, D-73770 Denkendorf, Germany;2. Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany;3. Institute of Inorganic Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany |
| Abstract: | The current paper focuses on the fabrication of yttria and magnesia stabilized zirconia nanofibers via electrospinning from zirconyl chloride octahydrate and polyvinylpyrrolidone precursors with minor additions of yttrium nitrate hexahydrate (3 mol.%) or magnesium nitrate hexahydrate (10 mol.%). The precursor materials were dissolved in an ethanol-water mixture in a ratio of 75:25. After successful fiber preparation, the thermal decomposition behavior of the starting materials and the subsequent phase evolution at elevated temperatures were studied. Pure tetragonal zirconia nanofibers were obtained for the composition stabilized with 3 mol.% yttria when the thermal treatment was conducted with a heating rate of 10 K/min up to 1100 °C. In future research work, these tetragonal zirconia nanofibers will be used as reinforcing material in metal matrix composites based on metastable austenitic steel. The combination of the TRIP/TWIP-effect in the steel matrix with the stress-assisted tetragonal to monoclinic phase transformation in the tetragonal stabilized zirconia will lead to a composite material with outstanding mechanical properties. |
| Keywords: | Electrospinning Yttria stabilized zirconia Magnesia stabilized zirconia Nanofibers Sol-gel processing TRIP-Matrix composites |
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