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A process for the preparation of a magnetic material - alloy powder based on iron
A process for the preparation of a magnetic material - alloy powder based on iron
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机译：磁性材料-铁基合金粉末的制备方法
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摘要
A method for the production of a magnetic alloy material - powder based on iron comprising the steps of:(a) producing a magnetic alloy material, which a fe - r - b an iron-based alloy which is at least 50 percent by weight iron, wherein r stands for a rare earth element,comprising the steps of:(i) preparing a melt of an alloy material; and(ii) quenching of the alloy material with the formation of a solidified alloy, with a thickness of from 80 to 300 μm, which contains an amorphous phase, and(b) to the step of the magnetic alloy material, which contains an amorphous phase using a pinned disk mill to form a powder having a mean particle size of from 10 to 100 μm, which is nearly unchanged, even after the total weight of the pulverized alloy has reached 100 kg, wherein the pin mill, a rotating disk and a plurality of pins which are arranged on the disk, and at least the pins a cemented carbide - material, and at least during the pulverizing said to the total weight of the pulverized alloy has reached 100 kg of the same pin mill is used, which is operated with the same pins.
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