Porous yttrium-stabilized zirconia(YSZ) hollow fibers with an outer diameter of 1.92 mm,membrane thickness of 0.21 mm were prepared by a combined technique of phase inversion and sintering.The hollow fiber possessed a sandwich structure with long-finger like voids near the inner and outer walls and a thin porous sponge-like layer in the center.The porosity and average pore size of the YSZ hollow fiber were determined to be 54% and 0.56 m,respectively.The surface of the hollow fiber was converted from hydrop...
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