Method for Producing Composite Soft Magnetic Material Exhibiting Excellent Magnetic Characteristics, High Strength and Low Core Loss
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United States of America Patent
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Issued Date -
Oct 18, 2007
app pub date -
Oct 28, 2004
filing date -
Oct 31, 2003
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Abandoned
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Abstract
A method of manufacturing a composite soft magnetic material having excellent magnetic characteristics, a high strength, and a low core loss, having steps of: heating a silicon resin film-coated soft magnetic powder at a temperature of from the room temperature to 150.degree. C. obtained by forming a thin silicon resin film having a thickness of from 0.1 .mu.m to 5 .mu.m on a surface of a soft magnetic powder or an insulating film-coated soft magnetic powder; filling the silicon resin film-coated soft magnetic powder at a temperature of from the room temperature to 150.degree. C. in a mold which is heated at a temperature of from 100.degree. C. to 150.degree. C. and performing compaction at a pressure of from 600 MPa to 1500 MPa, thereby obtaining a compact; and curing the compact at a temperature of from 400.degree. C. to 600.degree. C.
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