Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1969-12-24
1976-05-11
Satterfield, Walter R.
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
148 3157, 148105, H01F 102
Patent
active
039560317
ABSTRACT:
A method of producing a magnetic material having a high magnetic anisotropy constant. A vapor phase of the components of the material is established and the vaporized components are passed into contact with a substrate maintained at a temperature such that the material will solidify and deposit thereon in the form of crystals with basal planes parallel to the plane of the substrate. The vapor deposited material is separated from the substrate and subjected to a magnetic field thereby to orient the crystals whereby a permanent magnet material is produced. Apparatus for producing the material includes means for vaporizing the components of the material. A substrate in the form of an endless belt is positioned relative to the vaporizing means so as to be exposed to the vapors and moves around rollers. Means are provided for controlling the temperature of the substrate within a preselected temperature range in a first zone so that the material solidifies as a deposit on the substrate. Means are provided for vibrating the belt in a second zone spaced from the first zone whereby separating the vapor deposited material from the substrate. Collection means are positioned below the vibrating zone of the substrate for collecting the separated vapor deposited material. The resulting permanent magnet material has a high magnetic anisotropy and comprises oriented crystals of an alloy of cobalt and a rare earth with parallel basal planes and a close packed hexagonal grain structure.
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Baumann Russ
Haug John A.
McAndrews James P.
Satterfield Walter R.
Texas Instruments Incorporated
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