کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1619122 | 1516384 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evolution of microstructure and magnetic properties of nanocrystalline Fe70âxCuxCo30 alloy prepared by mechanical alloying
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The mechanical alloying process has been used to prepare nanocrystalline Fe70âxCuxCo30 (x = 0, 3, 6, and 10) alloy from powder mixture. The structure and magnetic properties were investigated through powder X-ray diffraction (XRD), electron microscopy and magnetization measurements. The XRD patterns show a bcc crystal structure with lattice constant 0.2865 nm and crystallite size (D) of 15 nm evolves on 60 h milling in the case of Fe-Co alloy. But it is found that Cu speeds up the formation of bcc phase with finer microstructure (D = 7 nm for x = 10). Increase in microstrain is observed with the milling time and also with Cu concentration. The magnetic measurements show a contrasting saturation magnetization and coercivity (HC) for the case of samples having lower (x â¤Â 3) and higher (x > 3) Cu content in Fe-Co alloys. These variations are explained on the basis of crystallite size and strain variations in the samples during milling. Present results indicate that a nonmagnetic inclusion enhances the soft magnetic properties due to improved microstructure, which is consistent with random anisotropy model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 496, Issues 1â2, 30 April 2010, Pages 423-428
Journal: Journal of Alloys and Compounds - Volume 496, Issues 1â2, 30 April 2010, Pages 423-428
نویسندگان
B. Bhoi, V. Srinivas, Vidyadhar Singh,