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US 2006/0131359 A1Published application
Titanium braze foil
AssigneeHoneywell International Inc.
InventorMatthew Pohlman
Life of this patent
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Abstract
The present invention provides a braze foil comprising titanium and zirconium layers covered by one or more layers of copper, nickel or an alloy of copper and nickel such that neither the zirconium or titanium layers are exposed to the atmosphere. The braze foil may further be layered onto a base material during production to form a braze-clad base material. Methods for brazing a base material with the braze foil are also provided.
Claims59
A braze sheet or foil comprising:
- a core comprising at least one layer of titanium and at least one layer of zirconium;
- and
- at least one covering layer comprising commercially pure copper, a copper alloy, commercially pure nickel, a nickel alloy or mixtures thereof, wherein the covering layer has a metallurgical bond with said core.
A braze sheet or foil comprising:
- a first metallic layer;
- a second metallic layer;
- and
- a core comprising titanium and zirconium wherein the core is between the first and the second metallic layers.
1 more element
A braze sheet or foil comprising:
- a first metallic layer;
- a second metallic layer;
- a third metallic layer;
- a fourth metallic layer;
- a fifth metallic layer;
- a sixth metallic layer, and
- a core comprising titanium, wherein the first, second and third metallic layers are layered on one side of the core and the fourth, fifth, and sixth metallic layers are layered on another side of the core and wherein at least one of the first, second, third, fourth, fifth or sixth layer comprises zirconium.
4 more elements
A braze sheet or foil comprising:
- a first metallic layer;
- a second metallic layer, the second layer bonded to the first layer by a metallurgical bond;
- a third metallic layer, the third layer bonded to the second layer by a metallurgical bond and wherein the third layer comprises zirconium;
- a core layer, the core layer bonded to the third layer by a metallurgical bond and wherein the core layer comprises titanium;
- a fourth metallic layer, the fourth layer bonded to the core layer by a metallurgical bond and wherein the fourth layer comprises zirconium;
- a fifth metallic layer, the fifth layer bonded to the fourth layer by a metallurgical bond;
- and
- a sixth metallic layer, the sixth layer bonded to the fifth layer by a metallurgical bond.
5 more elements
A braze sheet or foil comprising:
- a first layer, the first layer comprising either copper or nickel;
- a second layer, the second layer bonded to the first layer by a metallurgical bond and wherein the second layer comprises the other of either copper or nickel;
- a third layer, the third layer bonded to the second layer by a metallurgical bond and wherein the third layer comprises zirconium;
- a core layer, the core layer bonded to the third layer by a metallurgical bond and wherein the core layer comprises titanium;
- a fourth layer, the fourth layer bonded to the core layer by a metallurgical bond and wherein the fourth layer comprises zirconium;
- a fifth layer, the fifth layer bonded to the fourth layer by a metallurgical bond and wherein the fifth layer comprises either copper or nickel;
- and
- a sixth layer, the sixth layer bonded to the fifth layer by a metallurgical bond and wherein the sixth layer comprises the other of either copper or nickel.
5 more elements
A braze sheet or foil comprising:
- a first layer comprising nickel, copper or mixtures thereof;
- a second layer comprising titanium or zirconium;
- a third layer comprising nickel, copper or mixtures thereof;
- a core layer comprising titanium or zirconium;
- a fourth layer comprising nickel, copper or mixtures thereof;
- a fifth layer comprising titanium or zirconium;
- a sixth layer comprising nickel, copper or mixtures thereof;
- and
- wherein at least one of the layers comprises zirconium and at least one of the layers comprises titanium.
6 more elements
A braze-clad base material comprising:
- a base material;
- and
- a braze sheet or foil bonded to the base material by a metallurgical bond, the braze sheet or foil comprising a first layer comprising nickel, copper or mixtures thereof, a second layer comprising titanium or zirconium, a third layer comprising nickel, copper or mixtures thereof, a core layer comprising titanium or zirconium, a fourth layer comprising nickel, copper or mixtures thereof, a fifth layer comprising titanium or zirconium, a sixth layer comprising nickel, copper or mixtures thereof and wherein at least one of the layers comprises zirconium and at least one of the layers comprises titanium.
A method for brazing a base material comprising the steps of:
- placing a braze sheet or foil between two base materials to be joined together, the braze sheet or foil comprising a first metallic layer, a second metallic layer and a core comprising titanium and zirconium wherein the core is between the first and the second metallic layers;
- heating the braze material and base materials to a brazing temperature;
- and
- forming a braze joint between the braze sheet or foil and the base materials.
1 more element
A method for brazing a base material comprising the steps of:
- placing a braze sheet or foil between two base materials to be joined together, the braze sheet or foil comprising a first layer comprising nickel, copper or mixtures thereof, a second layer comprising titanium or zirconium, a third layer comprising nickel, copper or mixtures thereof, a core layer comprising titanium or zirconium, a fourth layer comprising nickel, copper or mixtures thereof, a fifth layer comprising titanium or zirconium, a sixth layer comprising nickel, copper or mixtures thereof and wherein at least one of the layers comprises zirconium and at least one of the layers comprises titanium;
- heating the braze material and base materials to a brazing temperature;
- and
- forming a braze joint between the braze sheet or foil and the base materials.
1 more element
Dependencies are inferred from the claim text.