Properties of Powders of Induction-Melted Alloy Based on Sm2Co17 Depending on the Conditions of Milling

By the methods of X-ray diffraction analysis and scanning electron microscopy, we study the influence of the conditions of milling of induction-melted alloy based on Sm 2 Co 17 on the properties of powders, such as phase-and-structural state, anisotropy, and morphology. The properties of powders are...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2021-07, Vol.57 (1), p.27-34
Main Authors: Bulyk, І. І., Kononiuk, О. P.
Format: Article
Language:English
Subjects:
Amorphization
Anisotropy
Characterization and Evaluation of Materials
Chemistry and Materials Science
Disproportionation
Intermetallic compounds
Materials Science
Oleic acid
Sintering (powder metallurgy)
Solid Mechanics
Structural Materials
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Summary:By the methods of X-ray diffraction analysis and scanning electron microscopy, we study the influence of the conditions of milling of induction-melted alloy based on Sm 2 Co 17 on the properties of powders, such as phase-and-structural state, anisotropy, and morphology. The properties of powders are evaluated for their subsequent milling and sintering in hydrogen at lowered temperatures by the method of disproportionation and recombination. It is demonstrated that, as the frequency and time of milling in hydrogen and oleic acid increase, the range of dimensions of powder particles and the number of flaky particles increase, the alloy undergoes partial amorphization, and the level of texture decreases. It is shown that the optimal procedure of milling in oleic acid is realized for the frequency of rotation of the mill ν = 300 rpm and the duration of milling τ = 60 min.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-021-00510-9