Zirconia-Doped Alumina Submicron Fibers with Compressibility and High-Temperature Resistance Prepared by Solution Blow Spinning for Thermal Insulation
In this study, ceramic precursor fibers were prepared by a simple solution blowing spinning (SBS) method, and compressible, heat-resistant zirconia-doped alumina (ZDA) submicrometer fiber mats with a diameter of 400–800 nm were obtained by subsequent calcination. By doping ZrO<sub>2</sub>...
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| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | , , , , , , , |
| منشور في: |
2024
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| الموضوعات: | |
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| الملخص: | In this study, ceramic precursor fibers were prepared by a simple solution blowing spinning (SBS) method, and compressible, heat-resistant zirconia-doped alumina (ZDA) submicrometer fiber mats with a diameter of 400–800 nm were obtained by subsequent calcination. By doping ZrO<sub>2</sub> in alumina fibers via the solution route, it can be confirmed by the analysis of the X-ray diffraction (XRD) patterns, Raman spectra, and transmission electron microscopy (TEM) images that the nano-t-ZrO<sub>2</sub> formed at 1000 °C could retard the phase transition of Al<sub>2</sub>O<sub>3</sub> from γ-phase to α-phase at high temperatures and effectively inhibit the growth of α-Al<sub>2</sub>O<sub>3</sub> grains, then the consequent deterioration of mechanical properties and thermal stability could be alleviated. As a result, the ZDA submicrometer fiber mats exhibited improved compressibility and flexibility. The ZDA submicrometer fiber mats had thermal stability from −196 °C (liquid nitrogen) to above 1000 °C, making them suitable candidates for thermal insulation in extremely low-temperature environments and high-temperature industries. |
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