Binary rhenium alloys
AssigneeRhenium Alloys, Inc.
InventorsTodd Leonhardt, Clifford Guthman
Life of this patent
Estimating the term…
Abstract
Rhenium-tungsten alloys including rhenium and from about 0.025% to less than about 10% by weight tungsten. The rhenium-tungsten alloys are formed by a process that includes coating rhenium metal powders with a liquid including a tungsten compound, drying the coated rhenium powder, compressing the dried coated powder to form a compact, and then sintering the compact to form the rhenium-tungsten alloy. The rhenium-tungsten alloys according to the invention exhibit mechanical properties that are superior to high-purity rhenium metal without a loss in ductility.
Claims23
An alloy consisting essentially of rhenium and from about 0.025% up to about 10% by weight tungsten, the alloy exhibiting a room temperature tensile strength in excess of 150 Ksi and an elongation of 25% or greater as measured in accordance with ASTM E8-03.
An alloy consisting essentially of rhenium and from about 0.025% up to about 10% by weight tungsten formed by a process comprising:
- coating a metal powder consisting essentially of rhenium with a liquid comprising a tungsten compound;
- drying the coated metal powder;
- compressing the coated metal powder to form a compact;
- and
- sintering the compact to form the alloy.
A method comprising:
- coating a metal powder consisting essentially of rhenium with a liquid comprising a tungsten compound;
- drying the coated rhenium powder;
- compressing the coated powder to form a compact;
- and
- sintering the compact to form an alloy consisting essentially of rhenium and from about 0.025% up to about 10% by weight tungsten.
A wire formed of an alloy consisting essentially of rhenium and from about 0.025% up to about 10% by weight tungsten.
A method of forming an alloy consisting essentially of rhenium and from about 0.025% up to about 10% by weight tungsten comprising:
- providing a precipitate comprising a rhenium compound and a tungsten compound;
- compressing the precipitate to form a compact;
- and
- sintering the compact to form the alloy.
An alloy consisting essentially of rhenium and from about 0.025% up to about 10% by weight of a metal selected from the group consisting of tungsten, molybdenum, tantalum, iridium, ruthenium and osmium, the alloy formed by a process comprising:
- coating a metal powder consisting essentially of rhenium with a liquid comprising a compound selected from the group consisting of tungsten, molybdenum, tantalum, iridium, ruthenium and osmium;
- drying the coated metal powder;
- compressing the coated metal powder to form a compact;
- and
- sintering the compact to form the alloy.
A method comprising:
- coating a metal powder consisting essentially of rhenium with a liquid comprising a compound selected from the group consisting of tungsten, molybdenum, tantalum, iridium, ruthenium and osmium;
- drying the coated rhenium powder;
- compressing the coated powder to form a compact;
- and
- sintering the compact to form an alloy consisting essentially of rhenium and from about 0.025% up to about 10% by weight of a metal selected from the group consisting of selected from the group consisting of tungsten, molybdenum, tantalum, iridium, ruthenium and osmium.
A method of forming an alloy consisting essentially of rhenium and from about 0.025% up to about 10% by weight of a metal selected from the group consisting of tungsten, molybdenum, tantalum, iridium, ruthenium and osmium, the method comprising:
- providing a precipitate comprising a rhenium compound and a compound comprising a metal selected from the group consisting of tungsten, molybdenum, tantalum, iridium, ruthenium and osmium;
- compressing the precipitate to form a compact;
- and
- sintering the compact to form the alloy.
Dependencies are inferred from the claim text.