Hydrothermal method for producing stabilized zirconia and...

Details Hydrothermal method for producing stabilized zirconia and... Hydrothermal method for producing stabilized zirconia and...

C - Chemistry, Metallurgy

04

B

261/27

C04B 35/48 (2006.01)

Patent

CA 1259634

ABSTRACT OF THE INVENTION The invention is characterized by two main methods of producing stabilized or partially stabilized zirconia powders with controlled particle size by use of complexing agents and hydrothermal treatment. A further embodiment of the invention is characterized by a combination of the first two methods to produce powders containing more than one major particle size. The invention also allows use of low cost readily available starting material, controlled doping level and incorporation of dual constit- uents such as MgO, CaO; Y2O3, MgO; or Y2O3, CaO in the structure for production of stabilized zirconia. Triply stabilized zirconia containing Y2O3, MgO and CaO may also be produced. A final embodiment of the invention allows the production of dually and triply stabilized zirconia by hydrothermal treatment without the use of complexing agents.

516339

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