Process and apparatus for producing a temperature sensitive elem

Details Process and apparatus for producing a temperature sensitive elem Process and apparatus for producing a temperature sensitive elem

1979-10-31

1982-08-31

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

148103, 264 65, 264 85, 264332, 264DIG58, 425 3, C04B 3550

Patent

active

043472010

ABSTRACT:
A temperature sensitive element comprises fine grain powders which consist of a spin reorientation type ferromagnetic material having a transition temperature range, below which transition temperature range the easy direction of magnetization of the spin reorientation type ferromagnetic material is predetermined in one crystallographic direction thereof and above which transition temperature range the easy direction of magnetization is a predetermined other direction perpendicular to the predetermined one crystallographic direction. The temperature sensitive element is produced by compacting the fine grain powders of a spin reorientation type ferromagnetic material at a temperature higher than the transition temperature range. A polycrystalline rare earth cobalt alloy material made in accordance with the invention can now be used in the field where low Curie point ferrite or where bimetals have been used previously for a thermal valve or a temperature controlling device.

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patent: 4063970 (1977-12-01), Steingroever
patent: 4156623 (1979-05-01), Becker

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