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Transformation enabled nitride magnets absent rare earths and a process of making the same 发明授权

2023-09-03 2080 600K 0

专利信息

申请日期 2025-07-11 申请号 US14304102
公开(公告)号 US9997285B2 公开(公告)日 2018-06-12
公开国别 US 申请人省市代码 全国
申请人 Case Western Reserve University
简介 A process for producing an ordered martensitic iron nitride powder that is suitable for use as a permanent magnetic material is provided. The process includes fabricating an iron alloy powder having a desired composition and uniformity; nitriding the iron alloy powder by contacting the material with a nitrogen source in a fluidized bed reactor to produce a nitride iron powder; transforming the nitride iron powder to a disordered martensitic phase; annealing the disordered martensitic phase to an ordered martensitic phase; and separating the ordered martensitic phase from the iron nitride powder to yield an ordered martensitic iron nitride powder.


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