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掺杂sio2对feco纳米晶磁粉电磁性能的影响

Keywords: 金属材料,?纳米晶磁粉,?二氧化硅,?复介电常数,?复磁导率

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Abstract:

?用高能球磨法制备了掺杂sio2的feco纳米晶磁粉,用sem、xrd等分析手段对纳米晶磁粉进行结构分析,研究了掺杂sio2对feco纳米晶磁粉/石蜡复合物复介电常数和复磁导率的影响.结果表明,杂质sio2主要以非晶态的形式存在于feco纳米晶颗粒中;与未掺杂sio2的feco纳米晶磁粉相比,在复磁导率变化很小的情况下,掺杂适量的sio2可显著降低纳米晶磁粉/石蜡复合物的复介电常数,可较好的解决吸波涂层设计中的阻抗匹配问题.

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