Polycrystalline magnetic substances for magnetic refrigeration a

Details Polycrystalline magnetic substances for magnetic refrigeration a Polycrystalline magnetic substances for magnetic refrigeration a

1988-09-22

1991-01-15

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75249, 252 6255, 419 23, 419 38, 419 66, B22F 900, C22C 500

Patent

active

049850725

ABSTRACT:
The polycrystalline magnetic substance for magnetic refrigeration in or gas refrigeration accordance with the present invention comprises a plurality of magnetic alloy fine crystalline powders that include at least one kind of rare-earth element selected from the group of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb, with the remainder metal consisting substantially of 2 kinds selected from Al, Ni, Co, and Fe, and a metallic binder which forms a compact together with the fine crystalline particles, where the abundance ratio of the metallic binder in the compact is 1 to 80% by volume.

REFERENCES:
patent: 3447912 (1969-06-01), Ortner et al.
patent: 3560200 (1971-02-01), Nesbitt et al.
patent: 3856580 (1974-12-01), Sneggil et al.
patent: 3892600 (1975-07-01), Smeggil et al.
patent: 4849017 (1989-07-01), Sahashi et al.

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