Microstructure and Phase Composition of Yttria-Stabilized Zirconia Nanofibers Prepared by High-Temperature Calcination of Electrospun Zirconium Acetylacetonate/Yttrium Nitrate/Polyacrylonitrile Fibers
| Autor: | Alexander I. Tyurin, Yuri I. Golovin, Vyacheslav V. Rodaev, Andrey O. Zhigachev, S. S. Razlivalova |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
ceramic nanofibers microstructure chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Biomaterials chemistry.chemical_compound law lcsh:TP890-933 lcsh:TP200-248 yttria doped zirconia Cubic zirconia Calcination Ceramic lcsh:QH301-705.5 Yttria-stabilized zirconia electrospinning Civil and Structural Engineering Zirconium composites reinforcement Polyacrylonitrile lcsh:Chemicals: Manufacture use etc Yttrium 021001 nanoscience & nanotechnology lcsh:QC1-999 0104 chemical sciences phase composition chemistry Chemical engineering lcsh:Biology (General) Mechanics of Materials visual_art Nanofiber Ceramics and Composites visual_art.visual_art_medium lcsh:Textile bleaching dyeing printing etc 0210 nano-technology lcsh:Physics |
| Zdroj: | Fibers, Vol 7, Iss 10, p 82 (2019) Fibers Volume 7 Issue 10 |
| ISSN: | 2079-6439 |
| Popis: | For the first time, dense nanofibers of yttria-stabilized tetragonal zirconia with diameter of ca. 140 nm were prepared by calcination of electrospun zirconium acetylacetonate/yttrium nitrate/polyacrylonitrile fibers at 1100&ndash 1300 ° C. Ceramic filaments were characterized by scanning electron microscopy, X-ray diffractometry, and nitrogen adsorption. With a rise in the calcination temperature from 1100 to 1300 ° C, the fine-grain structure of the nanofibers transformed to coarse-grain ones with the grain size equal to the fiber diameter. It was revealed that fully tetragonal nanofibrous zirconia may be obtained at Y2O3 concentrations in the range of 2&ndash 3 mol% at all used calcination temperatures. The addition of 2&ndash 3 mol% yttria to zirconia inhibited ZrO2 grain growth, preventing nanofibers&rsquo destruction at high calcination temperatures. Synthesized well-sintered, non-porous, yttria-stabilized tetragonal zirconia nanofibers can be considered as a promising material for composites&rsquo reinforcement, including composites with ceramic matrix. |
| Databáze: | OpenAIRE |
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