Permanent magnetic material and permanent magnet
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United States of America Patent
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-
Feb 6, 2001
Grant Date -
N/A
app pub date -
Sep 29, 1995
filing date -
Oct 6, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
With the object of improving magnetic properties by remaining amorphous phase of a quenched R--Fe--B permanent magnet, in a quenched permanent magnetic material comprising Fe as a major component, at least one lanthanoid element, R, and boron, the permanent magnetic material comprises 10 percent by area or less of a soft magnetic remaining amorphous phase, and the balance being a crystalline phase substantially formed by heat treatment and containing R--Fe--B hard magnetic compound. A bulk magnet is made of the permanent magnetic material by plastic forming.
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