Coprecipitation preparation method of nanoscale yttrium-stabilized zirconia powder

The invention relates to a coprecipitation preparation method of nanoscale yttrium-stabilized zirconia powder. The preparation method comprises the following steps: weighing a certain amount of ZrOCl2. 8H2O, adding a certain amount of Y2O3 according to the stoichiometric ratio of Y0. 06Zr0. 94O1. 97, stirring and dissolving, and preparing a mixed salt solution with the concentration of 0.1-1 mol/L; the method comprises the following steps: weighing a certain amount of NaOH, KOH, ammonia water or ammonium carbonate, and preparing an alkali solution with the concentration of 0.1-1 mol/L; dropwise adding the mixed salt solution into an alkaline solution which is magnetically stirred at the constant temperature of 60-80 DEG C, and titrating until a certain pH value (7-12) is reached; after the reaction is finished, aging the flocculent precipitate for 0.5-4 hours, washing with water, washing with absolute ethyl alcohol, filtering and drying to obtain a white precursor; and calcining the precursor for 2-4 hours at