发明名称 |
Process for producing soft magnetic material |
摘要 |
A method for producing a soft magnetic material consisting essentially of up to 0.05% carbon, up to 1.0% manganese, up to 0.05% sulfur, up to 0.5% silicon, from 0.5 to 1.5% phosphorus, balance iron and residuals. The method comprises the steps of: blending iron powder and phosphorus-bearing powder into a mixture containing from 0.5 to 1.5% phosphorus; pressing the blended mixture; and sintering the mixture in a non-oxidizing atmosphere at a temperature and for a period of time sufficient to produce a density of at least 7 grams per cubic centimeter. The sintering temperature is at least 2200 DEG F. The soft magnetic material is characterized by a magnetizing force to reach 10 kilogauss of no more than 2.0 oersteds, and a coercive force from 10 kilogauss of no more than 0.9 oersted.
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申请公布号 |
US4047983(A) |
申请公布日期 |
1977.09.13 |
申请号 |
US19750571169 |
申请日期 |
1975.04.24 |
申请人 |
ALLEGHENY LUDLUM INDUSTRIES, INC. |
发明人 |
FALKOWSKI, EDWARD C.;RUPPEL, CARL E. |
分类号 |
C22C33/02;H01F1/22;(IPC1-7):H01F1/14 |
主分类号 |
C22C33/02 |
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地址 |
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