| 摘要 |
PURPOSE:To produce Fe-Si alloy powder having excellent magnetic characteristic and only a little grain boundary and defect by mixing high purity iron powder and silicon nitride in the specific ratio and heat-treating at the specific temp. under non-oxidizing atmosphere. CONSTITUTION:The Fe powder and the Si3N4 powder are mixed in the ratio of 25wt. parts of Si3N4 to the 100wt. parts of Fe powder. The mixed powder is heat-treated at 1,000-1,400 deg.C under the non-oxidizing gas atmosphere of N2, etc., and the Fe-Si alloy powder containing 1-10wt.% Si without making any massive material is produced with mutual diffusion of Fe and Si3N4. The Fe-Si alloy powder having fine particle-state without any grain boundary with pulverizing process and having high effective magnetic permeability in high frequency range and high magnetic characteristic, is obtd. |
