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首页> 外文期刊>IEEE Transactions on Magnetics >Characterization and Microwave Absorbing Properties of Nd-Fe-Ti Intermetallic Compounds Derived From Nd-Fe-B Sintered Magnet Scraps
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Characterization and Microwave Absorbing Properties of Nd-Fe-Ti Intermetallic Compounds Derived From Nd-Fe-B Sintered Magnet Scraps

机译：Nd-Fe-B烧结磁铁屑衍生的Nd-Fe-Ti金属间化合物的表征和微波吸收特性

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摘要

Nd-Fe-Ti intermetallic compounds were prepared from rare earth sintered magnet scrap powders (Nd_(2)Fe_(14)B sludge) and Ti by arc-melting and solidification processes. The resulting alloy ingots were ground into fine powders and some of them were heated at 100 deg C-250 deg C for 1-12 h in air. The epoxy resin composites with 83 wt(percent) of these powders showed good microwave absorption properties at gigahertz range, and the maximum absorption peak of -39.4 dB was observed at 12.3 GHz after heating at 250 deg C for 3 h in air. Compared to Fe-Ti intermetallic compound powders prepared from fresh metals of Fe and Ti, the sludge-derived Nd-Fe-Ti powders showed higher oxidation resistivity due to the preferential oxidation of Nd content.
机译：Nd-Fe-Ti金属间化合物是通过电弧熔炼和凝固工艺从稀土烧结磁铁废料粉末（Nd_（2）Fe_（14）B污泥）和Ti制备的。将所得的合金锭磨成细粉，并将其中一些在空气中于100摄氏度至250摄氏度加热1-12小时。这些粉末的重量百分比为83％（重量）的环氧树脂复合材料在千兆赫兹范围内表现出良好的微波吸收性能，在空气中于250摄氏度加热3小时后，在12.3 GHz处观察到最大吸收峰-39.4 dB。与由新鲜的Fe和Ti金属制备的Fe-Ti金属间化合物粉末相比，由于Nd含量的优先氧化，源自污泥的Nd-Fe-Ti粉末显示出更高的抗氧化性。

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