Method for preparing zirconium oxide micro powder

[0021] Follow the steps below in order:

[0022] i) Prepare zirconium oxychloride into solution B with a concentration of 1.0M, dilute 14M ammonia water into solution A of 1.0M, and add solution A to solution B under constant stirring conditions to produce precipitation of zirconium hydroxide. Stop at PH=7.0, aging for 12 hours;

[0023] ii) Wash the precipitate fully with deionized water until no white precipitate can be detected with silver nitrate, and obtain precipitate C; dissolve zirconium oxychloride in deionized water to obtain solution D; add precipitate C to solution D, add water When the concentration of zirconium ions reaches 1.0M, heat to boiling under stirring conditions until all the precipitates are peptized;

[0024] iii) Centrifugal sedimentation to separate the unpeptized precipitate: put the sol into a closed container and settle for 1 hour on a centrifuge with a separation factor of 3600 to obtain Sol E;

[0025] iv) Heat sol E to boiling, continuously a...

[0028] Follow the steps below in order:

[0029] i) Prepare zirconium oxychloride and yttrium chloride mixed solution and prepare ammonia solution according to the following ratio: 322 grams of zirconium oxychloride and 43 grams of yttrium chloride solution that can be converted to 6.4 grams of yttrium oxide are mixed and prepared into a concentration of 1.0M For solution B, dilute 14M ammonia water into 1.0M solution A, add solution A to solution B under constant stirring conditions, and produce zirconium hydroxide precipitation, stop when pH=7.0, and age for 12 hours;

[0030] ii) Wash the precipitate fully with deionized water until no white precipitate can be detected with silver nitrate, and obtain precipitate C; dissolve 966 grams of zirconium oxychloride in deionized water to obtain solution D; add precipitate C to solution D , add water until the concentration of zirconium ions reaches 1.0M, and heat to boiling under stirring conditions until all the precipitates are p...