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- Title
ISOTHERMAL SECTION OF THE Ni-Mn-Sb TERNARY SYSTEM AT 773K.
- Authors
Ao, W.-Q.; Yu, H.-Z.; Liu, F.-L.; Liu, F.-S.; Li, J.-Q.; Du, Y.; Liu, S.-H.; Shi, C.-Y.
- Abstract
The isothermal section of the Ni-Mn-Sb ternary system at 773 K was measured by means of 117 alloys which were analyzed by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS), and electron probe microanalysis (EPMA) techniques. The existence of 7 binary compounds, namely NiMn, Mn2Sb, MnSb, NiSb2, NiSb, Ni5Sb2, Ni3Sb and 2 ternary compounds, namely Ni2MnSb and NiMnSb were confirmed for this isothermal section. The four binary compounds Ni3Sb (Cu3Ti structure, Pmmn space group), Ni5Sb2 (Ni5Sb2-type structure, C2 space group), NiSb2 (FeS2-type structure, Pnnm space group) and Mn.Sb (Cu.Sb-type structure, P4/nmm space group) in the binary systems Ni-Sb and Mn-Sb were stoichiometric compounds, the homogeneity ranges of which were negligible. However the five single phases in the Ni-Mn system and the two binary compounds MnSb and NiSb showed more or less homogeneity ranges formed by substitution of Mn and Sb for Ni atom. The Heusler compound p (NiMnSb) has L21-type ordered structure with space group Fm-3m, a = 0.6017 nm. And the crystal structure for the Half-Heusler compound K (NiMnSb) is C1b-type (F-43m) with a = 0.5961 nm. The approximate homogeneity ranges of the two ternary compounds p and K at 773 K were investigated.
- Subjects
TERNARY system; ELECTRON probe microanalysis; SPACE groups; SCANNING electron microscopy; SPACE frame structures
- Publication
Journal of Mining & Metallurgy. Section B: Metallurgy, 2019, Vol 55, Issue 2, p147
- ISSN
1450-5339
- Publication type
Article
- DOI
10.2298/JMMB181104019A