Layered products for fluxless brazing of substrates

Metal fusion bonding – Process – Critical work component – temperature – or pressure

Reexamination Certificate

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C228S262500, C228S056300, C228S123100, C228S183000, C228S225000, C428S650000, C428S654000

Reexamination Certificate

active

07735718

ABSTRACT:
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.

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