초록 ▼

A metallic oxide such as aluminum oxide of significantly improved electrical properties is disclosed. The method of oxide formation includes a combination of soft porous anodization followed by transformation to a hard barrier form of oxide using inter alia low temperature electrolytes, constant vol

A metallic oxide such as aluminum oxide of significantly improved electrical properties is disclosed. The method of oxide formation includes a combination of soft porous anodization followed by transformation to a hard barrier form of oxide using inter alia low temperature electrolytes, constant voltage anodizing, and timely rate of current change responsive termination of the anodizing process. Use of the resulting oxide in electrical insulation, optic and other environments is contemplated.

대표청구항 ▼

A method for forming a film of dielectric of oxide on a metallic aluminum surface comprising the steps of: forming on said metallic aluminum surface a first electrolyte anodization layer of honeycomb structured porous soft aluminum oxide material transforming honeycomb structured porous soft aluminu

A method for forming a film of dielectric of oxide on a metallic aluminum surface comprising the steps of: forming on said metallic aluminum surface a first electrolyte anodization layer of honeycomb structured porous soft aluminum oxide material transforming honeycomb structured porous soft aluminum oxide material in said first layer into a dielectric hard oxide in an acidic electrolyte at predetermined values of temperature, and at constant anodizing voltage, to the point of attaining a predetermined non zero time rate of change of anodizing current.