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US 6,855,234 B2Granted
Sinter-bonded direct pin connections for inert anodes
AssigneeAlcoa Inc.
InventorLeroy E. D'Astolfo, Jr.
Life of this patent
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Abstract
A sintered electrode assembly is made of an inert electrode (15) containing a sealed metal conductor (20) having a surface feature (30) such as a coating or wrapping which aids in bond formation with the inert electrode (15) at their interface (45), where the metal conductor (20) is directly contacted by and is substantially surrounded by the inert electrode (15) without the use of metal foam or metal powders.
Claims23
A sintered electrode assembly comprising:
- an inert electrode containing a sealed metal conductor rod, the conductor rod having a surface feature to aid in direct bond formation with the inert electrode, where the conductor rod is directly contacted by and is surrounded by the inert electrode to provide a tight fit between the conductor rod and inert electrode.
A sintered electrode assembly comprising:
- an inert electrode having a hollow interior with a top portion and interior bottom and side walls;
- a metal pin conductor rod having bottom and side surfaces, disposed within the hollow electrode interior and directly contacting the inert electrode interior walls with the aid of a surface feature on the conductor rod to aid in bond formation with the inert electrode, to provide a tight fit between the conductor rod and inert electrode.
A method of producing an electrode assembly comprising the steps:
- (1) providing an inert anode electrode having a hollow interior with a top portion and interior bottom and side walls;
- (2) providing a metal pin conductor rod having a surface feature on the surface of or within the conductor;
- (3) inserting said conductor rod into said inert electrode, and
- (4) sintering to achieve a chemical/mechanical connection, where, during the sintering the surface feature aids bonding, and where sintering provides a tight fit between the conductor rod and inert electrode, providing continuous coherent contact at the conductor rod-inert electrode interface.
1 more element
Dependencies are inferred from the claim text.