中文摘要：

研究了热处理工艺对Fe73.5Cu1Nb3Si13.5B9非晶粉体/丁基橡胶复合材料电磁屏蔽性能的影响。结果表明,Fe73.5Cu1Nb3Si13.5B9粉体在非晶态时经过350℃×1h的退火处理后,其复合材料的屏蔽性能达到最佳。粉体经550℃×2h晶化处理后,屏蔽性能得到进一步改善,在1000～6000MHz频段内,其｜SE｜值比经350℃×1h退火处理后的高出2～3dB;复合材料的后续热处理对屏蔽性能影响较大,特别是粉体处于非晶态时,后续热处理对屏蔽性能改善的幅度最大,当f〉1000MHz时,与未后续热处理的材料相比,经过180℃×6h后续热处理试样的｜SE｜上升3dB以上。

英文摘要：

The effects of heat processing on electromagnetic shielding properties of composites based on Fe73.5Cu1Nb3Si13.5B9 amorphous powders/butyl rubber were investigated.The results show that the best electromagnetic shielding properties of composites have been obtained at 350℃ for 1h in the state of amorphous,the shielding properties can be further improved at 550℃ for 2h when powders have been partly crystallized and the value of ｜SE｜at 550℃ for 2h is 2 to 3dB higher than that of｜SE｜ at 350℃ for 1h in the frequency range 1000-6000MHz;the shielding properties were also remarkably influenced by post-heat treatment of composites,the amplitude of shielding property increases most obviously after post-heat treatment for 6 h when the powders are in the form of amorphous.The value of ｜SE｜has been improved more than 3dB at 180℃ for 6h in contrast to the non-heat-treatment composites when the frequency is in the range of 1000 to 6000MHz.