Fabrication and enhanced performances of yttria-alumina co-doped zirconia fibers via centrifugal spinning

Aiming to prepare high performance zirconia fibers efficiently, a novel yttria-alumina co-doped zirconia (YADZ) fiber with improved flexibility, outstanding thermal stability and insulation performance was fabricated by centrifugal spinning. High efficiency for preparing ceramic fiber was achieved by the centrifugal spinning, in which the spinnable solution was dropped into rotating spinning disc. The zirconia was stabilized as the t-ZrO 2 and the grain size was decreased, because of the co-doping of yttria and alumina. The cyclic loading and thermal insulation tests indicated that the YADZ fibers has excellent compression resilience, high temperature resistance and thermal insulation performances. This work provides a feasible measure for the fabrication of zirconia fibers high efficiently with improved performance that can be applied to thermal insulation.