Open AccessStructure and magnetic properties of melt-spun ribbons of Sm(Co,Fe,Cu,Zr)z with high cobalt content
Author(s) -
E. V. Khudina,
М. В. Железный,
I. O. Minkova,
P. S. Rybin,
В. П. Менушенков
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1389/1/012119
Subject(s) - coercivity , materials science , melt spinning , cobalt , phase (matter) , isothermal process , metastability , hexagonal crystal system , crystallography , ferromagnetism , analytical chemistry (journal) , metallurgy , spinning , composite material , condensed matter physics , chemistry , thermodynamics , physics , organic chemistry , chromatography
In this work the investigation of structure and magnetic properties of SmCo 7.5 Fe 3.09 Cu 0.84 Zr 0.3 and SmCo 7.52 Fe 3.01 Cu 0.84 Zr 0.28 melt-spun ribbons with high cobalt content after different heat treatments was performed. The phase composition and magnetic properties of the samples were determined. Isothermal aging at 600-800 °C with subsequent slow cooling leads to the slight increase in coercivity of the samples. After arc-melting the phase composition of the samples is hexagonal Sm 2 Co 17 and CoFe. After melt-spinning a small amount of the disordered SmCo 7 phase is detected. After aging metastable SmCo 7 disappears, and the phase structure is basically hexagonal phase Sm 2 Co 17 and CoFe, except a tiny amount of SmCo 5 and rhombohedral Sm 2 Co 17 after aging at 800 °C. Magnetic properties of the samples are relatively low because the phases, essential for the high-coercive state in these alloys, do not form during applied heat treatments.