“…[11][12][13] As a kind of inorganic material, Zirconium dioxide (ZrO 2 ) ber is a widely used high-temperature insulation material due to its the lowest thermal conductivity (among all metal oxides), ultrahigh temperature resistance and long service lifetime. 14,15 However, the thermal insulation properties of zirconia solid ber have almost no room for further improvement due to their microstructural limitations. 16,17 Therefore, it is necessary to nd new microstructures to further improve the thermal insulation properties of ZrO 2 materials.…”