Systems, Methods, and Materials for Cryogenic Thermoelectric Cooling
US-2016260881-A1 · Sep 8, 2016 · US
Rhenium-tungsten wire rod and thermocouple using the same
US12376492B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12376492-B2 |
| Application number | US-202318461864-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 6, 2023 |
| Priority date | Mar 9, 2021 |
| Publication date | Jul 29, 2025 |
| Grant date | Jul 29, 2025 |
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- Title
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- Abstract
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Abstract
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The rhenium tungsten wire rod according to an embodiment is a wire rod made of a tungsten alloy containing rhenium, wherein a rhenium content is less than 30 wt % in any measurement area of a wire rod body where a unit area is 1 μm in diameter.
First claim
Opening claim text (preview).
What is claimed is: 1. A rhenium-tungsten wire rod which is a wire rod made of a tungsten alloy containing rhenium, the rhenium-tungsten wire rod having a rhenium content of less than 30 wt % in a unit area at each of 17 points in each of two radial cross-sections of the rhenium-tungsten wire rod, where the unit area is a circle area having 1 μm in diameter, the 17 points comprising intersections (16 points) of four equally spaced concentric circles with two axes and a center (1 point) in said each of two radial cross-sections, the two axes being parallel to a diameter of said each of two radial cross-sections and intersecting each other, wherein the rhenium content has a coefficient of variation of 0.10 or less in semi-quantitative analysis using an electron probe microanalyzer EPMA. 2. The rhenium-tungsten wire rod according to claim 1 , wherein the rhenium content is 1 wt % or more and less than 30 wt %. 3. The rhenium-tungsten wire rod according to claim 1 , wherein the rhenium content is 2 wt % to 28 wt %. 4. The rhenium-tungsten wire rod according to claim 1 , wherein the tungsten alloy contains 30 wtppm to 90 wtppm of potassium (K). 5. The rhenium-tungsten wire rod according to claim 1 , wherein the rhenium-tungsten wire rod has a diameter of 0.1 mm to 5.0 mm. 6. The rhenium-tungsten wire rod according to claim 5 , wherein the rhenium-tungsten wire rod has a standard deviation of tensile strength of 35 N/mm 2 or less. 7. A thermocouple which comprises the rhenium-tungsten wire rod according to claim 1 .
Assignees
Inventors
Classifications
mainly consisting of metals or alloys · CPC title
using thermoelectric elements, e.g. thermocouples · CPC title
Alloys based on tungsten or molybdenum · CPC title
- H10N10/854Primary
comprising only metals (H10N10/852, H10N10/853 take precedence) · CPC title
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- What does patent US12376492B2 cover?
- The rhenium tungsten wire rod according to an embodiment is a wire rod made of a tungsten alloy containing rhenium, wherein a rhenium content is less than 30 wt % in any measurement area of a wire rod body where a unit area is 1 μm in diameter.
- Who is the assignee on this patent?
- Toshiba Kk, Toshiba Materials Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H10N10/854. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 29 2025 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).