Interaction of Ground SmCo4.8Zr0.2 Alloy with Hydrogen

The hydrogen pressure and reaction time were studied during disproportionation of the ground SmCo 4.8 Zr 0.2 alloy. The alloy ground at ν = 100 rpm for τ = 24 h disproportionates at 0.5 MPa hydrogen pressure within 15–30 min, the alloy ground at ν = 200 rpm for τ = 6 and 12 h disproportionates at 0....

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Published inPowder metallurgy and metal ceramics Vol. 56; no. 9-10; pp. 581 - 588
Main Authors Bulyk, I. I., Borukh, I. V.
Format Journal Article
LanguageEnglish
Published New York Springer US 2018
Springer Nature B.V
Subjects
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Disproportionation
Ferromagnetic phases
Ferromagnetism
Glass
Hydrogen
Materials Science
Metallic Materials
Natural Materials
Reaction time
Samarium base alloys
magnetic material
disproportionation
phase transformation
X-ray diffraction
mechanochemical grinding
hydrogen
samarium–cobalt alloys
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Summary:The hydrogen pressure and reaction time were studied during disproportionation of the ground SmCo 4.8 Zr 0.2 alloy. The alloy ground at ν = 100 rpm for τ = 24 h disproportionates at 0.5 MPa hydrogen pressure within 15–30 min, the alloy ground at ν = 200 rpm for τ = 6 and 12 h disproportionates at 0.5 MPa hydrogen pressure, and the alloy ground at ν = 300 rpm for τ = 6 h disproportionates into SmH x and ht-Co below 0.1 MPa hydrogen pressure. Residues of the CaCu 5 –type ferromagnetic phase were found among the disproportionation products.
ISSN:1068-1302
1573-9066
DOI:10.1007/s11106-018-9931-y