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US-2018362413-A1 · Dec 20, 2018 · US
Magnetocaloric materials
US9238592B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9238592-B2 |
| Application number | US-98408011-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 4, 2011 |
| Priority date | Jan 11, 2010 |
| Publication date | Jan 19, 2016 |
| Grant date | Jan 19, 2016 |
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Abstract
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What are described are magnetocaloric materials of the general formula (Mn x Fe 1−x ) 2+z P 1−y Si y where 0.55≦x<1 0.4≦y≦0.8 −0.1≦z≦0.1.
First claim
Opening claim text (preview).
The invention claimed is: 1. A magnetocaloric material of formula (1): (Mn x Fe 1−x ) 2+z P 1−y Si y (1) where 0.6≦x≦0.65 0.45≦y≦0.6 −0.05≦z≦0.05. 2. The magnetocaloric material according to claim 1 , which has a hexagonal structure of the Fe 2 P type. 3. A process for producing the magnetocaloric material according to claim 1 , said process comprising: performing solid phase conversion or liquid phase conversion of Mn, Fe, P and Si to a material of formula (1), wherein the Mn, Fe, P and Si are in element form or alloy form, optionally cooling the material of formula (1), and then a) pressing, sintering and heat treating under inert gas atmosphere and subsequently cooling to room temperature the optionally cooled material of formula (1), or b) melt spinning of a melt of the optionally cooled material of formula (1). 4. A process for producing the magnetocaloric material according to claim 1 , comprising: a) converting Mn, Fe, P and Si to a material of formula (1), wherein the Mn, Fe, P and Si are in element form or alloy form, and wherein the material of formula (1) is in the solid and/or liquid phase, b) if the material of formula (1) from a) is in the liquid phase, converting said material in the liquid phase to a solid phase, c) sintering and/or heat treating the material of formula (1) in the solid phase from a) or b), d) quenching the sintered and/or heat treated material of formula (1) in the solid phase from c) at a cooling rate of at least 100 K/s. 5. A cooler, a heat exchanger or a generator, comprising the magnetocaloric material according to claim 1 .
Assignees
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Classifications
Chemistry & Metallurgy · mapped topic
Alloys based on manganese · CPC title
Cooling rate · CPC title
by powder metallurgy · CPC title
containing manganese · CPC title
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Frequently asked questions
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- What does patent US9238592B2 cover?
- What are described are magnetocaloric materials of the general formula (Mn x Fe 1−x ) 2+z P 1−y Si y where 0.55≦x<1 0.4≦y≦0.8 −0.1≦z≦0.1.
- Who is the assignee on this patent?
- Reesink Bernard Hendrik, Brueck Ekkehard, Nguyen Huu Dung, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C04B35/58085. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 19 2016 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).