• structural and microwave absorption properties of nanostructured fe–co alloys

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1393/01/01
    • تاریخ انتشار در تی پی بین: 1393/01/01
    • تعداد بازدید: 579
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    • شماره تماس دبیرخانه رویداد: -
     we analyzed nanostructured fe60co40 alloy obtained by mechanical alloying using a planetary ball mill. the prepared powders were characterized using x-ray diffraction (xrd), laser particle-measurement, scanning electron microscopy (sem), x band waveguide and cavity resonator associated with network analyzer. obtained results are discussed according to milling time. xrd patterns show after 12 h of milling the formation of a disordered solid solution having body-centerd cubic (bcc) structure. after 36 h milling, morphological studies indicated that the average crystallites size is around 13 nm and the particles average diameter is about 3.6 μm. the microwave absorbing characteristic was enhanced between 0 and 54 h of milling (from −0.8 to −13.807 db) with decreasing in the relative dielectric permittivity εr.

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