Parameter optimization and performance enhancement of zirconia-doped alumina fibers via solution centrifugal spinning

In this work, a straightforward and high efficiency centrifugal spinning process was employed to fabricate alumina fibers with exceptional performance. The preparation parameters were optimized through an orthogonal test. Zirconia-doped alumina ceramic fibers with diameters around 1 μm were successfully produced using the optimized parameters. Analysis, including XRD, Raman, FTIR, and TEM, confirmed that the addition of ZrO 2 in alumina inhibited the crystallization of alumina at high temperatures. Consequently, the resulting fibers exhibited enhanced compressive resilience. Furthermore, the zirconia-doped alumina fibers demonstrated outstanding high-temperature stability (>1000 °C) and thermal insulation performance. Low pressure drops and high-efficient filtration for removing submicron particulate matter (PM) in flue gas were attained by using the fiber mats for the filtration. The zirconia-doped alumina fibers prepared in this work through solution centrifugal spinning methods are attractive for use in high-temperature thermal management and industrial high temperature flue gas filtration.