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Dy和Al對Fe-Co合金微波吸收性能的影響
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國家自然科學(xué)基金資助（50961005）；廣西自然科學(xué)基金創(chuàng)新研究團隊項目資助（2012GXNSFGA06002）


Effect of Dy and Al on Microwave Absorbing Properties of Fe-Co Alloy
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    摘要:

    采用高真空電弧熔煉和高能球磨相結(jié)合的方法制備 Dy-Fe-Co 和 Dy-Fe-Co-Al合金微粉，利用X射線衍射技術(shù)（XRD）、掃描電鏡分析方法（SEM）和矢量網(wǎng)絡(luò)分析儀對合金粉的相結(jié)構(gòu)、顆粒形貌和吸波性能進行分析。研究發(fā)現(xiàn)：隨著Dy的添加，DyxFe90-xCo10(x=6, 9, 12)合金的吸收峰從低頻向高頻移動；在低頻端，Dy6Fe84Co10合金的微波吸收性能優(yōu)于其他合金，在d=1.8 mm厚度下，其吸收峰出現(xiàn)在3.6 GHz處，峰值達到 –6.7 dB；Al的適當(dāng)添加可有效改善Fe-Co合金在低頻端的微波吸收性能。在d=1.8 mm厚度下，Dy12Fe70Co10Al8合金的吸收峰在5.4 GHz處，峰值達到 –9.2 dB，在3~6 GHz頻率范圍內(nèi)其微波吸收性能優(yōu)于Dy12Fe78Co10合金

    Abstract:

    The Dy-Fe-Co and Dy-Fe-Co-Al alloy powders were prepared by the arc melting method and high energy ball milling. The phase structures and the microstructures of the alloys powders were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM), then their microwave absorbing properties were analyzed by Vector network analyzer. The results show that the absorption peaks of DyxFe90-xCo10 (x=6, 9, 12, mole fraction, %) shift towards higher frequency region from lower frequency region. At low frequency, the microwave absorbing properties of Dy6Fe84Co10 alloy is better than those of the others, when the material thickness is 1.8 mm, the absorption peak of Dy6Fe84Co10 alloy reaches –6.7 dB at 3.6 GHz. The addition of Al can improve the low frequency characteristics of Fe-Co alloys. When the thickness is 1.8 mm, the absorption peak of Dy12Fe70Co10Al8 alloy reaches –9.2 dB at 5.4 GHz. The microwave absorbing properties of Dy12Fe70Co10Al8 alloy is better than those of Dy12Fe78Co10 alloy on the band of 3~6 GHz

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潘順康,王嘯坤,何崇康,周懷營,成麗春,譚秋玲. Dy和Al對Fe-Co合金微波吸收性能的影響[J].稀有金屬材料與工程,2013,42(12):2504~2508.[Pan Shunkang, Wang Xiaokun, He Chongkang, Zhou Huaiying, Cheng Lichun, Tan Qiuling. Effect of Dy and Al on Microwave Absorbing Properties of Fe-Co Alloy[J]. Rare Metal Materials and Engineering,2013,42(12):2504~2508.]
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  • 收稿日期:2012-12-21
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