Nickel/iron-based braze and process for brazing
AssigneeVacuumschmelze GmbH & Co. KG
InventorsDieter Nuetzel, Thomas Hartmann
Life of this patent
Estimating the term…
Abstract
Disclosed are a braze, such as a braze in the form of an amorphous, ductile brazing foil, having a composition consisting essentially of FeaNirestSibBcMd with 5 atomic percent≦a≦35 atomic percent, 1 atomic percent≦b≦15 atomic percent, 5 atomic percent<c≦15 atomic percent, 0≦d≦4 atomic percent, rest Ni and incidental impurities, wherein M is one or more of the elements Co, Cr, Mn, Nb, Mo, Ta, Cu, Ag, Pd or C, and having a liquidus temperature TL≦1025° C. Also disclosed are apparatus containing parts joined by said braze, methods for using said braze, and methods for making said amorphous, ductile brazing foil.
Claims13
An apparatus comprising two or more parts joined by a braze comprising:
- a composition consisting essentially of:
- FeaNirestSibBcMd
- wherein approximately 10 atomic percent≦a≦approximately 35 atomic percent, 1 atomic percent≦b≦15 atomic percent, 5 atomic percent<c≦15 atomic percent, 0≦d≦4 atomic percent, rest Ni and incidental impurities,
- wherein M is one or more of the elements Co, Cr, Mn, Nb, Mo, Ta, Cu, Ag, Pd or C;
- and
- wherein said braze has a liquidus temperature TL≦1025° C. and has been formed from an at least 50% amorphous, ductile brazing foil having a thickness D, where 10 μm≦D≦100 μm,
- wherein the apparatus comprises a heat exchanger or a component thereof having at least one solder seam produced with said braze.
An apparatus comprising two or more parts joined by a braze comprising:
- a composition consisting essentially of:
- FeaNirestSibBcMd
- wherein approximately 10 atomic percent≦a≦approximately 35 atomic percent, 1 atomic percent≦b≦15 atomic percent, 5 atomic percent<c≦15 atomic percent, 0≦d≦4 atomic percent, rest Ni and incidental impurities,
- wherein M is one or more of the elements Co, Cr, Mn, Nb, Mo, Ta, Cu, Ag, Pd or C;
- and
- wherein said braze has a liquidus temperature TL≦1025° C. and has been formed from an at least 50% amorphous, ductile brazing foil having a thickness D, where 10 μm≦D≦100 μm,
- wherein said parts comprise one or more of low- or mid-alloyed steel, a stainless steel, an alloy of Co, copper, or a copper alloy, or
- a precipitation-hardened Ni-based alloy.
Dependencies are inferred from the claim text.