Structural and Magnetic Properties of Fe–Co/Al2O3 Nanocomposite Powder Produced by Mechanical Alloying

Content Provider	Semantic Scholar
Author	Younes, Achour Bacha, N. E. Zergoug, Mourad Dilmi, Noura
Copyright Year	2017
Abstract	The effect of milling time and addition of elements on the microstructure, magnetic and mechanical properties of the Fe–xCo (x = 0, 5, 10, and 20 wt.%) matrix nanocomposite reinforced with 40 wt.% Al2O3 during mechanical alloying is examined. Fe–Al2O3 and Fe–Co–Al2O3 alloys are milled for 5, 15, 20, and 30 h and 20 h, respectively. The balance between the welding and fracturing and a steady-state situation is found out in the Fe–Co–40 wt.% Al2O3 nanocomposite after 20 h, due to the Co introduction into the Fe matrix, but not in the Fe–Al2O3 nanocomposite. After 30 h of milling, the average crystallite size was 5 nm in the Fe matrix. The lattice strain increased to ~0.64% in the Fe matrix after ≤30 h of milling and in the binary Fe–20 wt.% Co matrix after 20 h of milling; the average crystallite size was 3 nm. The lattice strain increased to ~0.56% for the Fe–20 wt.% Co matrix after ≤20 h of milling. The coercive field (Hc) increased from 6.407 to 82.027 Oe, while the saturation magnetization (Ms) decreased from 20.732 to 15.181 emu/g in the Fe matrix during milling. The Hc and Ms are maximum for the binary matrix (20 and 10% Co, respectively).
Starting Page	148
Ending Page	157
Page Count	10
File Format	PDF HTM / HTML
DOI	10.1007/s11106-017-9881-9
Volume Number	56
Alternate Webpage(s)	https://library.crti.dz/jr1850/document
Alternate Webpage(s)	https://doi.org/10.1007/s11106-017-9881-9
Journal	Powder Metallurgy and Metal Ceramics
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article