Metal fusion bonding – Process – With protecting of work or filler or applying flux
Patent
1979-05-08
1981-10-06
Ramsey, Kenneth J.
Metal fusion bonding
Process
With protecting of work or filler or applying flux
228118, 228263B, 228263R, B23K 104, B23K 120
Patent
active
042930898
ABSTRACT:
There is disclosed a positive cathode electrode structure formed by brazing a thin porous membrane to a backing material by preselecting a predetermined area of the thin porous membrane and thereafter providing a braze flow barrier throughout the remainder of the membrane and electrolessly plating a nickel-phosphide alloy on the backing material, or in this case the honeycomb structure. The preselected area of the thin porous membrane is placed in intimate contact with the electrolessly plated portion of the backing material and heated to elevated temperatures in the absence of oxygen to form a brazed joint limited to a preselected area. If the braze flow barrier is provided by application of a liquid organic solvent, then the organic solvent is driven off by maintaining the thin porous membrane at elevated temperatures for an extended period of time prior to the brazing operation.
REFERENCES:
patent: 2962811 (1960-12-01), Herbert, Jr.
patent: 3129502 (1964-04-01), Olson
patent: 3224071 (1965-12-01), Levi et al.
patent: 3246387 (1966-04-01), Duran et al.
patent: 3906617 (1975-09-01), Behringer et al.
patent: 4003753 (1977-01-01), Hall
Ferry Paul B.
Hall John C.
McCormick James T.
Carlson Dean E.
Denny James E.
Jackson Frank H.
Ramsey Kenneth J.
The United States of America as represented by the United States
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