Alloy capacitor porous anodes

Abstract

Abstract Alloys of intermetallic compounds and solid solutions are prepared as powders, compacted, and sintered at high temperatures to form porous, single phase alloys; the porous alloys are then surface-oxidized such as by anodization to form a mixed metal oxide film on the surfaces of the porous structure. This results in a mixed metal oxide surface film having good dielectric properties. The placement of conductive material in the void space of the porous anode results in the formation of a capacitor structure of superior properties. The general formula for the sintered alloys is AB where A and B are metals in the form of solid solutions or intermetallic compound alloys. Of specific interest are those 1:1 compounds which form ABO3 oxides. Preferred materials include Yal, CoTi and NiTi alloys. These AB sintered alloys are oxidized or anodized to form surface films of ABO3 and AxByOz.

Inventors

• 👤 Milton E Kirkpatrick
• 👤 Ralph A Mendelson

Bibliographic Details