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熱處理對TbFeCr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)；廣西基金資助項目(桂科能0710908-12-Z，桂科自0991002Z)


Effect of Heat Treatment on Microwave Absorbing Properties of Tb-Fe-Cr Alloy
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    摘要:

    采用電弧熔煉與高能球磨相結(jié)合的方法制備Tb9Fe88Cr3合金粉體，利用XRD、SEM和矢量網(wǎng)絡(luò)分析儀分析粉體的微結(jié)構(gòu)及微波吸收性能。研究發(fā)現(xiàn)進(jìn)行微氧化處理的合金微粉在低頻端吸波性能優(yōu)于未處理的合金微粉。在微氧化處理基礎(chǔ)上，進(jìn)一步研究熱處理溫度對合金微波吸收性能影響，研究發(fā)現(xiàn)：當(dāng)熱處理溫度在350 ℃時，吸收峰在7 GHz處，其峰值達(dá)到–11.5 dB，隨著真空熱處理溫度升高，合金微粉吸收峰向低頻移動，反射率增大；當(dāng)熱處理溫度為450和550 ℃時，吸收峰頻率與僅做微氧化處理合金的吸收頻率相近，吸收峰值減小了2~3 dB，低頻端吸波性能得到進(jìn)一步改善

    Abstract:

    The Tb9Fe88Cr3 alloy powders were prepared by the arc melting method and high energy ball milling. The phase structure and the microstructure of the alloys powders were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Then their microwave absorbing properties were analyzed by a vector network analyzer. The results show that the absorbing properties of the powders with micro-oxidation treatment at low frequency are better than that in raw state. On the basis of micro-oxidation treatment, the powders were dealt with by vacuum heat treatment at different temperatures. When the vacuum heat treatment temperature is 350 °C, the absorption peak value of the powders reaches –11.5 dB at 7 GHz. As the temperature of vacuum heat treatment increases, the absorption peak shifts towards the lower frequency region, and the reflectivity increases. When the vacuum heat treatment temperature is 450 and 550 °C, compared to that of the sample only dealt with by micro-oxidation treatment, they have similar absorption frequency, the absorption peak value decreases by 2~3 dB, and the absorbing properties at low frequency region are improved further

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楊 濤,潘順康,王嘯坤,周懷營,林培豪,成麗春.熱處理對TbFeCr合金微波吸收性能的影響[J].稀有金屬材料與工程,2013,42(5):1038~1042.[Yang Tao, Pan Shunkang, Wang Xiaokun, Zhou Huaiying, Lin Peihao, Cheng Lichun. Effect of Heat Treatment on Microwave Absorbing Properties of Tb-Fe-Cr Alloy[J]. Rare Metal Materials and Engineering,2013,42(5):1038~1042.]
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  • 收稿日期:2012-05-16
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