کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
830512 1470356 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural and magnetic properties of nanostructured (Fe70Co30)100−xCux alloy prepared by high energy ball milling
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Structural and magnetic properties of nanostructured (Fe70Co30)100−xCux alloy prepared by high energy ball milling
چکیده انگلیسی

In the present work, structural and magnetic properties of nanocrystalline (Fe70Co30)100−xCux (x = 0, 5, 9) powders produced by mechanical alloying (MA) have been Investigated. These properties were investigated by X-ray diffraction(XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM). According to the results, a body-centered cubic nanostructured (Fe70Co30)91Cu9 alloy with an average crystallite size of about 13 nm has been produced by milling for 32 h. Whereas, in (Fe70Co30)95Cu5 and (Fe70Co30) the alloying process has accomplished after 45 h milling. It is found that Cu speeds up the formation of a bcc phase with finer microstructure (D = 12 nm for x = 9). With increasing the milling time, the crystallite size has decreased for all powders. Increase in microstrain was observed with increasing the milling time and also with increasing Cu content. The magnetic measurements show a contrasting saturation magnetization and coercivity (Hc) in Fe–Co–Cu alloys. These variations are explained on the basis of crystallite size and strain variations in the samples during milling.


► The Fe70–Co30 alloys are well known in having very high saturation magnetization.
► It has shown that Cu has a great effect in reducing the required milling time to accomplish solid solution process.
► Adding Cu to the alloy has led to crystallite size refinement and therefore has improved the magnetic properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 41, October 2012, Pages 8–15
نویسندگان
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