Negative electrode active material for electric device
US-9209453-B2 · Dec 8, 2015 · US
Magnetocaloric alloys useful for magnetic refrigeration applications
US11225703B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11225703-B2 |
| Application number | US-201816476047-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 8, 2018 |
| Priority date | Jan 9, 2017 |
| Publication date | Jan 18, 2022 |
| Grant date | Jan 18, 2022 |
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- Title
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Abstract
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This invention relates to magnetocaloric materials comprising ternary alloys useful for magnetic refrigeration applications. The disclosed ternary alloys are Cerium, Neodymium, and/or Gadolinium based compositions that are fairly inexpensive, and in some cases exhibit only 2nd order magnetic phase transitions near their curie temperature, thus there are no thermal and structural hysteresis losses. This makes these compositions attractive candidates for use in magnetic refrigeration applications. The performance of the disclosed materials is similar or better to many of the known expensive rare-earth based magnetocaloric materials.
First claim
Opening claim text (preview).
What is claimed is: 1. A magnetocaloric material comprising: (Ce x Nd 1-x )Si wherein x is in the range of about 0.1 to about 0.9, and wherein the magnetocaloric material exhibits a 2 nd order magnetic phase transition in the temperature range of about 10K to about 42K. 2. The magnetocaloric material of claim 1 , wherein the material is Ce 0.1 Nd 0.9 Si 1.0 , Ce 0.2 Nd 0.8 Si 1.0 , Ce 0.3 Nd 0.7 Si 1.0 , Ce 0.4 Nd 0.6 Si 1.0 , Ce 0.5 Nd 0.5 Si 1.0 , Ce 0.6 Nd 0.4 Si 1.0 , Ce 0.7 Nd 0.3 Si 1.0 , Ce 0.8 Nd 0.2 Si 1.0 , Ce 0.9 Nd 0.1 Si 1.0 , or any combination thereof. 3. The magnetocaloric material of claim 1 , wherein the material comprises nano-grains, wherein at least one dimension of the nano-grains is in the range of about 0.1 nm to about 1000 nm. 4. A magnetic refrigerator, comprising the magnetocaloric material of claim 1 . 5. A method of manufacturing a heat pump, comprising fabricating at least one part of the heat pump from the material of claim 1 .
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Classifications
Nanosized particles · CPC title
Machines, plants or systems, using electric or magnetic effects · CPC title
Energy efficient heating, ventilation or air conditioning [HVAC] · CPC title
of other metals or alloys based thereon · CPC title
- C22C28/00Primary
Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00 · CPC title
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- What does patent US11225703B2 cover?
- This invention relates to magnetocaloric materials comprising ternary alloys useful for magnetic refrigeration applications. The disclosed ternary alloys are Cerium, Neodymium, and/or Gadolinium based compositions that are fairly inexpensive, and in some cases exhibit only 2nd order magnetic phase transitions near their curie temperature, thus there are no thermal and structural hysteresis loss…
- Who is the assignee on this patent?
- General Engineering & Res L L C, Univ California
- What technology area does this patent fall under?
- Primary CPC classification C22C28/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 18 2022 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).