کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10656508 | 1005558 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructural and magnetic behavior of an equiatomic NiCoAlFe alloy prepared by mechanical alloying
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Equiatomic NiCoAlFe powder alloys were synthesized by mechanical alloying. The microstructural evolution of the mechanically alloyed powders at different times was followed with X-ray diffraction and scanning electron microscopy. The as-mechanically alloyed powders were subjected to a rapid annealing treatment at 1273Â K and 1473Â K during 3Â min in vacuum. X-ray diffraction studies show the structure of both, the as-mechanically alloyed and annealed powders, consisted in a mixture of nanocrystalline simple phases (FCCÂ +Â BCC). Crystallite size, after annealing, still remained in nanoscale. Coercivity increased due to the decrease in crystallite size and because of the defects caused by mechanical alloying in the as-mechanically alloyed samples; then coercivity decreased due to the phenomenon of random magnetic anisotropy and tended to stabilize with longer alloying times. A similar behavior was observed in annealed samples at 1273Â K. However, random magnetic anisotropy was not observed after annealing at 1473Â K because crystals with larger sizes were produced, and a steady increase in coercivity was observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 615, Supplement 1, 5 December 2014, Pages S317-S323
Journal: Journal of Alloys and Compounds - Volume 615, Supplement 1, 5 December 2014, Pages S317-S323
نویسندگان
C.D. Gómez-Esparza, F.J. Baldenebro-López, C.R. Santillán-RodrÃguez, I. Estrada-Guel, J.A. Matutes-Aquino, J.M. Herrera-RamÃrez, R. MartÃnez-Sánchez,