Tantalum based alloy that is resistant to aqueous corrosion
US-11001912-B2 · May 11, 2021 · US
Niobium based alloy that is resistant to aqueous corrosion
US9580773B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9580773-B2 |
| Application number | US-201514834493-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 25, 2015 |
| Priority date | Jul 7, 2009 |
| Publication date | Feb 28, 2017 |
| Grant date | Feb 28, 2017 |
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Abstract
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A niobium or niobium alloy which contains pure or substantially pure niobium and at least one metal element selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt, Mo, W and Re to form a niobium alloy that is resistant to aqueous corrosion. The invention also relates to the process of preparing the niobium alloy.
First claim
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We claim: 1. A method of producing a niobium alloy that is resistant to aqueous corrosion, the method comprising microalloying pure or substantially pure niobium and at least one metal element selected from the group consisting of Ru, Rh, Pd, and Pt, wherein (i) the microalloying is performed to produce the niobium alloy via laser additive manufacturing (LAM), vacuum arc remelting (VAR), electron beam melting (EBM), or plasma arc melting (PAM), and (ii) each said at least one metal element is present, in the niobium alloy, in an amount less than its solubility limit in the pure or substantially pure niobium. 2. The method of claim 1 , wherein the at least one metal element comprises platinum. 3. The method of claim 1 , wherein the at least one metal element comprises ruthenium or rhodium or palladium. 4. The method of claim 1 , wherein the at least one metal element comprises ruthenium and palladium. 5. The method of claim 1 , wherein the at least one metal element comprises ruthenium. 6. The method of claim 1 , wherein the at least one metal element comprises palladium. 7. The method of claim 1 , wherein each said at least one metal element is present in an amount of at least 250 ppm in the niobium alloy. 8. The method of claim 1 , wherein the microalloying is performed via laser additive manufacturing (LAM). 9. The method of claim 1 , wherein the microalloying is performed via vacuum arc remelting (VAR). 10. The method of claim 1 , wherein the microalloying is performed via electron beam melting (EBM). 11. The method of claim 1 , wherein the microalloying is performed via plasma arc melting (PAM). 12. The method of claim 1 , wherein, after the microalloying, the niobium alloy consists essentially of pure niobium and the at least one metal element. 13. The method of claim 1 , wherein, after the microalloying, the niobium alloy consists of pure niobium and the at least one metal element. 14. The method of claim 1 , wherein, after the microalloying, the niobium alloy consists of substantially pure niobium and the at least one metal element, the substantially pure niobium containing no more than 11% by weight of non-niobium components. 15. The method of claim 1 , wherein, after the microalloying, the niobium alloy consists of substantially pure niobium and the at least one metal element, the substantially pure niobium containing no more than 5% by weight of non-niobium components.
Assignees
Inventors
Classifications
- C22B34/24Primary
Obtaining niobium or tantalum · CPC title
by particle radiation, e.g. electron beams · CPC title
Alloys based on vanadium, niobium, or tantalum · CPC title
Arc remelting · CPC title
by electric discharge, e.g. plasma (C22B9/20 takes precedence; apparatus therefor H01J, H05B, H05H; chemical reactions with metals in a plasma C22B4/005) · CPC title
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- What does patent US9580773B2 cover?
- A niobium or niobium alloy which contains pure or substantially pure niobium and at least one metal element selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt, Mo, W and Re to form a niobium alloy that is resistant to aqueous corrosion. The invention also relates to the process of preparing the niobium alloy.
- Who is the assignee on this patent?
- Aimone Paul R, Kumar Prabhat, Starck H C Inc
- What technology area does this patent fall under?
- Primary CPC classification C22B34/24. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 28 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).