Method of producing an anisotropic bonded magnet
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United States of America Patent
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Dec 28, 1999
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N/A
app pub date -
Jan 22, 1996
filing date -
Jan 22, 1996
priority date (Note) -
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Abstract
Compression molding suitable anisotropic magnet powder had not been established facing the difficulty of contradiction of high density and magnet powder alignment. By applying both magnetic field and pressure at the moment when the resin is melted into liquid state by heating, both high density and a high degree of magnet powder alignment are attained. Furthermore, application of degassing and ultrasonic vibration were found to be effective. An anisotropic bonded magnet with the maximum energy of more than 20 MGOe, in other words, more than 80% of the theoretical value of maximum energy product, is obtained.
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