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公开(公告)号:US11486034B2
公开(公告)日:2022-11-01
申请号:US15930912
申请日:2020-05-13
Applicant: Zhengzhou University
Inventor: Jilin He , Benshuang Sun , Yongchun Shu , Yang Liu , Jie Chen , Xueyun Zeng
IPC: C23C14/34 , C04B35/457 , C04B35/626 , C04B35/638 , C04B35/634 , C04B35/636 , C04B35/64 , C04B111/00
Abstract: A method of preparing an ITO ceramic target includes that: In2O3 powder with mass fraction of 90˜97 and SnO2 powder with mass fraction of 10˜3 are ball-milled and mixed with deionized water, diluent, binder and polymer material by a sand mill to obtain an ITO ceramic slurry with a solid content between 70˜80% and a viscosity between 120˜300 mpa·s, with an average particle size D50 of the mixed powder controlled at 100˜300 nm; the ITO ceramic slurry is shaped by a pressure grouting to obtain an ITO ceramic green body with a relative density of 58˜62%; the ITO ceramic green body is put into a degreasing and sintering integrated furnace, and under a degreasing temperature of 700˜800° C., the ITO ceramic target is degreased in an atmospheric oxygen atmosphere for the time set to 12˜36 hours; the temperature increases from the degreasing temperature to the first sintering temperature of 1,600˜1,650° C.
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公开(公告)号:US11479475B2
公开(公告)日:2022-10-25
申请号:US15931269
申请日:2020-05-13
Applicant: Zhengzhou University
Inventor: Jie Chen , Jilin He , Benshuang Sun , Yongchun Shu , Xueyun Zeng , Yang Liu
IPC: C01G15/00
Abstract: A method of preparing an indium oxide spherical powder with a controllable grain shape includes: (1) reacting a sulfuric acid solution, and then adding a nitric acid solution, to react with the metal indium to obtain a mixed solution system containing indium sulfate and indium nitrate; (2) adjusting a concentration of indium ions in the mixed solution system to between 0.45˜0.6M; (3) performing a precipitation reaction of the mixed solution with a precipitant, until a pH value of the solution is between 9˜10, and then having the solution precipitated and aged to obtain an indium hydroxide precursor slurry; (4) using a ceramic membrane to filter and wash the precursor slurry, and ending the washing to obtain a purified precursor sample; (5) drying the precursor sample at 80˜130° C.; and (6) ball-milling the precursor sample, and calcining the precursor at a calcination temperature to obtain the indium oxide powder.
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