COMPOSITE ARTICLE WITH MAGNETOCALORICALLY ACTIVE MATERIAL AND METHOD FOR ITS PRODUCTION
First Claim
Patent Images
1. A composite article, comprising:
- (a) a solid matrix comprising a magnetocalorically passive material and having a microstructure comprising a plurality of particles of magnetocalorically passive material that have lattice structure that exhibits strain, or fractures, or both, from compression, and that, at least in part, touch one or more immediately neighboring particles of magnetocalorically passive material; and
(b) a plurality of solid inclusions comprising a magnetocalorically active material at least partially embedded in the solid matrix, whereinthe inclusions either;
(1) have a microstructure comprising a plurality of particles of magnetocalorically active material that have lattice structure that exhibits strain, or fractures, or both from compression, and that, at least in part, touch one or more immediately neighboring particles of magnetocalorically passive material, or(2) form a series of foils flakes or tapes embedded in the matrix.
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Accused Products
Abstract
A composite article (1; 10; 40) comprises a plurality of inclusions (5) of a magnetocalorically active material embedded in a matrix (4) of a magnetocalorically passive material. The inclusions (5) and the matrix (4) have a microstructure characteristic of a compacted powder.
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Citations
61 Claims
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1. A composite article, comprising:
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(a) a solid matrix comprising a magnetocalorically passive material and having a microstructure comprising a plurality of particles of magnetocalorically passive material that have lattice structure that exhibits strain, or fractures, or both, from compression, and that, at least in part, touch one or more immediately neighboring particles of magnetocalorically passive material; and (b) a plurality of solid inclusions comprising a magnetocalorically active material at least partially embedded in the solid matrix, wherein the inclusions either; (1) have a microstructure comprising a plurality of particles of magnetocalorically active material that have lattice structure that exhibits strain, or fractures, or both from compression, and that, at least in part, touch one or more immediately neighboring particles of magnetocalorically passive material, or (2) form a series of foils flakes or tapes embedded in the matrix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 17, 18, 19, 20, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 58, 59, 60, 61)
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9. A composite article, comprising:
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(a) a solid matrix comprising a magnetocalorically passive material having a sintered microstructure comprising a plurality of grains of magnetocalorically passive material that have lattice structure that exhibits strain relief, and that, at least in part, touch one or more immediately neighboring grains of magnetocalorically passive material via an interface comprising interdiffused atoms from the neighboring grains, resulting from sintering a compressed powder of magnetocalorically passive material; (b) a plurality of solid inclusions of comprising a magnetocalorically active material at least partially embedded in the solid matrix. - View Dependent Claims (12, 13, 14, 15, 16, 21, 22, 56, 57)
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10. (canceled)
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11. (canceled)
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35. (canceled)
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37. A method of manufacturing a solid composite article, comprising:
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providing a first powder comprising a magnetocalorically active material, providing a second powder comprising a magnetocalorically passive material, mixing the first powder and the second powder together to form a powder mixture, and compacting the powder mixture to form a solid composite article comprising a solid matrix comprising the magnetocalorically passive material and a plurality of solid inclusions comprising a magnetocalorically active material at least partially embedded in the solid matrix. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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Specification