Influence of Milling Conditions on the Structural State of Powders of Melt-Spinned Alloy Based on Sm2Co17

We study the influence of milling conditions of a melt-spinned alloy based on Sm 2 Co 17 on the properties of powders, namely, their phase-structural state, anisotropy, and morphology by the methods of X-ray phase diffraction analysis and scanning electron microscopy. The properties of powders are e...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2022-03, Vol.57 (5), p.702-710
Main Authors: Bulyk, І. І., Kononiuk, О. P., Bovda, V. О.
Format: Article
Language:English
Subjects:
Amorphization
Anisotropy
Characterization and Evaluation of Materials
Chemistry and Materials Science
Disproportionation
Low temperature
Materials Science
Melt spinning
Oleic acid
Sintering (powder metallurgy)
Solid Mechanics
Structural Materials
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Summary:We study the influence of milling conditions of a melt-spinned alloy based on Sm 2 Co 17 on the properties of powders, namely, their phase-structural state, anisotropy, and morphology by the methods of X-ray phase diffraction analysis and scanning electron microscopy. The properties of powders are evaluated in accordance with the requirements for subsequent refinement of their microstructure and sintering in hydrogen at low temperatures by the method of disproportionation and recombination. It is shown that, as the frequency and time of milling in hydrogen and oleic acid increase, the range of particle sizes of the powders and the number of flaky particles increase, the alloy is partially amorphized, and the degree of texture decreases. It is shown that the procedure of milling in oleic acid with ν ≈ 100 rpm for τ ≤ 12 h is optimal.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-022-00598-7