Borgwarner Inc.

Dana Canada Corporation

Kostas F Dockus

Brian Edward Cheadle

Robert H Krueger

Mark Stephen Kozdras

Feng Liang

Richard A Hoffman

Michael E Graham

John L Zambrow

William D Sproul

Stefanija Kisielius, Legal Representative

Margaret Anna Hoffman, Legal Representative

Mark S Kozdras

A brazing product for fluxless brazing comprises a substrate and a filler metal-forming composition applied to the substrate. The substrate preferably comprises aluminum, an aluminum alloy or another metal and may include at least one layer of a ceramic, carbide or nitride. The filler metal-forming composition comprises a liquid-forming layer comprising silicon and a braze-promoting layer comprising one or more metals selected from the group comprising nickel, cobalt, palladium and iron. The liquid-forming layer comprises one or more material layers. Where the liquid-forming layer comprises a plurality of layers, it may include at least one layer consisting essentially of silicon.

Layered products for fluxless brazing of substrates

A method of manufacturing an article of manufacture for use in a fluxless brazing process is disclosed. The method comprises the step of applying a braze-promoting layer including one or more metals selected from the group consisting of nickel, cobalt and iron, onto a bonding layer which comprises one or more metals selected from the group consisting of zinc, tin, lead, bismuth, nickel, antimony and thallium and which is disposed on a substrate including aluminum.

Fluxless brazing

A family of low temperature brazing alloys wherein the alloy is utilized in the form of a filler metal or shim and consists of electroplated nickel on zinc shimstock, wherein the zinc shimstock includes zinc, aluminum and silicon, with or without a small amount of lead, tantalum or bismuth. The use of the brazing alloys for joining aluminum parts together or an aluminum part to a part of another metal, such as brass. Further, metallic coating could be thermally spray coated and powder metals could be utilized as the filler materials with equally acceptable brazing techniques. Using these techniques, the brazing could be accomplished at a temperature in the range of 750 to 1050&#xb0; F.

Alloy composition and method for low temperature fluxless brazing

Methods for fluxless brazing

A controlled environment capsule for fluxless brazing comprising an open-bottom box, an end-plate and a foil gasket sealing means. Diffusion plates are disposed within the interior of the box and connected to an external source of inert gas. The inert gas is uniformly distributed over the work piece, excluding air from the capsule and the work piece by being maintained at a positive pressure relative to the external environment.

Controlled atmosphere capsule for fluxless brazing

The direct liquid phase bonding of ceramics to metals or other ceramics in an inert atmosphere without prior metallization wherein a nickel-plated aluminum-silicon brazing alloy or aluminum or aluminum alloy filler material between the ceramic and metal layers provides a joint of high strength at a low bonding temperature without affecting the ceramic microstructure or the mechanical properties of the materials. This technique is also useful for fabricating composite laminates.

Direct liquid phase bonding of ceramics to metals

The surfaces of aluminum and aluminum alloy articles, when abraded with a low-density abrasive product in the presence of a lower alcohol such as isopropanol, are readily plated or coated to provide a uniform plating or coating. The process is particularly useful in providing aluminum-silicon brazing alloy with nickel or nickel-lead plating for brazing.

Surface preparation of aluminum articles

A method of plating cobalt-lead or nickel-lead alloys upon aluminum base articles. The plating baths comprise salts of the plating metals and have a pH of from 7-12. Both electroless and electroplating bath compositions are disclosed.

Plating baths for depositing cobalt-lead nickel-lead alloys or

A method of brazing aluminum parts where the brazing occurs between one aluminum part and a second part formed of either aluminum or another metal, wherein the aluminum or aluminum alloy has a braze cladding which is plated with a bond-promoting alloy prior to the brazing operation. If an aluminum brazing foil is utilized between the parts, the bond-promoting metal is plated onto the brazing foil. The bond-promoting alloy includes nickel or cobalt with a small amount of lead added thereto, such that the nickel-lead or cobalt-lead may be used individually or in combination.

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Cicero, IL, United States of America

Kostas F Dockus