Electrode material for aluminum electrolytic capacitors and method for producing same
US-2024301561-A1 · Sep 12, 2024 · US
Magnetic shielding material for superconducting magnet
US9103005B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9103005-B2 |
| Application number | US-201213458301-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 27, 2012 |
| Priority date | Apr 28, 2011 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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A magnetic shielding material which can decrease the thickness by having excellent conductivity even at low temperatures of, for example, 77 K or lower, in a strong magnetic field of a magnetic flux density of 1 T or more is provide. A magnetic shielding material to be used at low temperatures of 77 K or lower in the magnetic field of a magnetic flux density of 1 T or more, comprises aluminum having a purity of 99.999% by mass or more.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of shielding a superconducting magnet comprising: placing a magnetic shielding material on a periphery of the superconducting magnet, wherein the magnetic shielding material includes aluminum having a purity of 99.999% by mass or more, the superconducting magnet being operated at low temperatures of 77 K or lower in the magnetic field of a magnetic flux density of 1 T or more, such that the magnetic shielding material is subjected to the magnetic field and the low temperatures. 2. The method of shielding the superconducting magnet according to claim 1 , wherein the aluminum has the content of iron of 1 ppm by mass or less. 3. The method of shielding the superconducting magnet according to claim 1 , wherein the aluminum has a purity of 99.9999% by mass or more. 4. The method of shielding the superconducting magnet according to claim 1 , wherein the aluminum has a purity of 99.99998% by mass or more. 5. The method of shielding the superconducting magnet according to claim 1 , wherein the aluminum comprises an intermetallic compound Al 3 Fe. 6. The method of shielding the superconducting magnet according to claim 1 , wherein the magnetic shielding material has a resistivity ranging from 0.246 to 1.06 nΩcm when measured in liquid helium at 4.2 K by varying a magnetic field applied to the magnetic shielding material from a magnetic flux density of 0 T to 15 T.
Assignees
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Classifications
with superconducting coils, e.g. power supply therefor · CPC title
Al as the principal constituent · CPC title
- C22C21/00Primary
Alloys based on aluminium · CPC title
of main or gradient magnetic field · CPC title
with aluminium as the major constituent · CPC title
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- What does patent US9103005B2 cover?
- A magnetic shielding material which can decrease the thickness by having excellent conductivity even at low temperatures of, for example, 77 K or lower, in a strong magnetic field of a magnetic flux density of 1 T or more is provide. A magnetic shielding material to be used at low temperatures of 77 K or lower in the magnetic field of a magnetic flux density of 1 T or more, comprises aluminum h…
- Who is the assignee on this patent?
- Tomaru Takayuki, Sasaki Kenichi, Hoshikawa Hiroaki, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C22C21/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 11 2015 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).