Add different quantities yttria(Y2O3) (such as 5 mol, 7 mol, 9 mol, 13 mol) in high purity zirconia, after special electric-fusion process, yttria stabilized zirconia be made. Yttria stabilized zirconia(YSZ) typical application: Zirconia refractory material Plasma spraying Sizing nozzle in steel-making industry Filling materal of induction furnace insulating layer Coating material of making Ti alloy Zirconia products Alumina sheet surface spraying Oxygen permeable membrane ceramic ring etc.