Tantalum based alloy that is resistant to aqueous corrosion
US-9957592-B2 · May 1, 2018 · US
Tantalum based alloy that is resistant to aqueous corrosion
US11001912B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11001912-B2 |
| Application number | US-201916540215-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 14, 2019 |
| Priority date | Apr 27, 2007 |
| Publication date | May 11, 2021 |
| Grant date | May 11, 2021 |
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Abstract
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A tantalum or tantalum alloy which contains pure or substantially pure tantalum 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 tantalum alloy that is resistant to aqueous corrosion. The invention also relates to the process of preparing the tantalum alloy.
First claim
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We claim: 1. A method of producing a tantalum alloy, the method comprising microalloying pure or substantially pure tantalum with Ru, wherein (i) the microalloying is performed to produce the tantalum alloy via laser additive manufacturing (LAM), vacuum arc remelting (VAR), electron beam melting (EBM), or plasma arc melting (PAM), and (ii) the Ru is present, in the tantalum alloy, in an amount less than 2,000 ppm. 2. The method of claim 1 , wherein the Ru is present in an amount of at least 250 ppm in the tantalum alloy. 3. The method of claim 1 , wherein (i) substantially pure tantalum is microalloyed with the Ru, and (ii) the substantially pure tantalum comprises Ta—3W. 4. The method of claim 1 , wherein the microalloying is performed via laser additive manufacturing (LAM). 5. The method of claim 1 , wherein the microalloying is performed via vacuum arc remelting (VAR). 6. The method of claim 1 , wherein the microalloying is performed via electron beam melting (EBM). 7. The method of claim 1 , wherein the microalloying is performed via plasma arc melting (PAM). 8. The method of claim 1 , wherein, after the microalloying, the tantalum alloy consists essentially of pure tantalum and Ru. 9. The method of claim 1 , wherein, after the microalloying, the tantalum alloy consists of pure tantalum and Ru. 10. The method of claim 1 , wherein, after the microalloying, the tantalum alloy consists of substantially pure tantalum and Ru, the substantially pure tantalum containing no more than 11% by weight of non-tantalum components. 11. The method of claim 1 , wherein the Ru is present in an amount of at least 50 ppm in the tantalum alloy. 12. The method of claim 1 , wherein the Ru is present in an amount of at least 500 ppm in the tantalum alloy. 13. The method of claim 1 , wherein, after the microalloying, the tantalum alloy consists of substantially pure tantalum and Ru, the substantially pure tantalum comprising Ta—3W. 14. The method of claim 1 , wherein, after the microalloying, the tantalum alloy comprises an alloy of tantalum, tungsten, and Ru. 15. The method of claim 1 , further comprising forming one or more plates, sheets, and/or tubes from the tantalum alloy.
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- What does patent US11001912B2 cover?
- A tantalum or tantalum alloy which contains pure or substantially pure tantalum 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 tantalum alloy that is resistant to aqueous corrosion. The invention also relates to the process of preparing the tantalum alloy.
- Who is the assignee on this patent?
- Aimone Paul R, Hinshaw Evan, Starck H C Inc
- What technology area does this patent fall under?
- Primary CPC classification C22C27/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 11 2021 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).