Process for the production of ultrafine powders of metal oxides
AssigneeAdvanced Nano Technologies Pty Ltd
InventorsPaul Gerard McCormick, Takuya Tzuzuki
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Abstract
A process for the production of ultrafine powders that includes subjecting a mixture of precursor metal compound and a non-reactant diluent phase to mechanical milling whereby the process of mechanical activation reduces the microstructure of the mixture to the form of nano-sized grains of the metal compound uniformly dispersed in the diluent phase. The process also includes heat treating the mixture of nano-sized grains of the metal compound uniformly dispersed in the diluent phase to convert the nano-sized grains of the metal compound into a metal oxide phase. The process further includes removing the diluent phase such that the nano-sized grains of the metal oxide phase are left behind in the form of an ultrafine powder.
Claims16
A process for the production of ultrafine powders, the process comprising:
- subjecting a mixture of a precursor metal compound and a non-reactant diluent phase to mechanical milling which through the process of mechanical activation reduces the microstructure of the mixture to the form of nano-sized grains of the metal compound uniformly dispersed in the diluent phase;
- heat treating the mixture of nano-sized grains of the metal compound uniformly dispersed in the diluent phase to convert the nano-sized grains of the metal compound into a metal oxide phase;
- and
- removing the diluent phase such that said nano-sized grains of the metal oxide phase are left behind in the form of an ultrafine powder.
Dependencies are inferred from the claim text.