Low-temperature preparation of novel stabilized aluminum titanate ceramic fibers via nonhydrolytic sol-gel method through linear self-assembly of precursors |
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| Affiliation: | 1. National Engineering Research Center for Domestic & Builing Ceramics, Jingdezhen Ceramic Institute, Jingdezhen, 333000, China;2. Department of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333000, China;1. School of Physics and Electronics Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, China;2. Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, 430074, 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. Eötvös Lóránd University, Institute of Chemistry, H-1117, Budapest, Hungary;2. H-ION Ltd., H-1121, Budapest, Hungary;3. Eötvös Lóránd University, Institute of Physics, H-1117, Budapest, Hungary;4. Semmelweis University, Department of Surgical Research and Techniques, H-1089, Budapest, Hungary;1. National Engineering Research Center for Domestic & Builing Ceramics, Jingdezhen Ceramic Institute, Jingdezhen 333000, China;2. Department of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China |
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| Abstract: | Stabilized aluminum titanate fibers were prepared via nonhydrolytic sol-gel (NHSG) method through linear self-assembly of precursors. The results show that NHSG method generates the heterogeneous condensation with the formation of Al–O–Ti, Mg–O–Ti, Fe–O–Ti, Mg–O–Al, Fe–O–Ti bonds, which ensures that magnesium ions and iron ions can enter aluminium titanate lattice and stabilize it at 750 °C. Bimolecular associated structure of chlorotitanium ethoxide titanium precursor promotes the self-linear-assemble of all precursors, which enables the excellent spinnability of sol. Stabilized aluminum titanate fibers have excellent corrosion resistance. The thermal expansion coefficient of stabilized aluminum titanate ceramic is −0.142 × 10−6°C−1. |
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| Keywords: | Stabilized aluminum titanate Fiber Nonhydrolytic sol-gel method Linear self-assembly of precursors Anticorrosion resistance to hot salt |
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