Liquidus surface of the quasi-ternary system Cu2S–In2S3–FeS

A projection of the liquidus surface of the quasi-ternary system Cu2S-In2S3-FeS was constructed as a result of experimental studies of quasi-binary and non-quasi-binary sections and based on the data on binary systems comprising a ternary system.Each section (six quasi-binary and four non-quasi-binary ones) was studied separately using complex methods of physicochemical analysis: differential thermal analysis, X-ray phase analysis, and microstructural analysis.It was found that the quasi-ternary system Cu2S-In2S3-FeS has six fields of primary crystallisation of separate phases and eleven monovariant equilibrium curves along which two phases are co-crystallised. Non-variant equilibrium points were obtained through the extrapolation of the direction of monovariant equilibrium curves.The quasi-ternary system Cu2S-In2S3-FeS is characterised by 17 non-variant equilibrium points, where Е1-Е5 are triple eutectic points.The projection diagram of the liquidus surface is characterised by three crystallisation fields of the initial componets (Cu2S, In2S3, FeS), four fields of binary compounds, and one field of a complex compound (CuFeIn3S6).Since complete solubility of the initial components in liquid and solid states is observed in the quasi-binary section CuIn5S8‑FeIn2S4, the fields of primary crystallisation of CuIn5S8 and FeIn2S4 are absent; they are replaced by an unlimited solid solution based on these components.The fields of primary crystallisation of Cu2S, FeS, and CuInS2 are the most extensive in the ternary system Cu2S-In2S3-FeS. The reactions occurring at monovariant equilibrium points are presented.

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Isothermal section of the Ni-Mn-Sb ternary system at 773K

Journal of Mining and Metallurgy Section B Metallurgy ◽

10.2298/jmmb181104019a ◽

2019 ◽

Vol 55 (2) ◽

pp. 147-156 ◽

Cited By ~ 1

Author(s):

W.-Q. Ao ◽

H.-Z. Yu ◽

F.-L. Liu ◽

F.-S. Liu ◽

J.-Q. Li ◽

...

Keyword(s):

Isothermal Section ◽

Ternary System ◽

Binary Systems ◽

Type Structure ◽

X Ray Diffraction ◽

Energy Dispersion Spectroscopy ◽

Heusler Compound ◽

Space Group ◽

Ternary Compounds ◽

Binary Compounds

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 Mn2Sb (Cu2Sb-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 ? (Ni2MnSb) has L21-type ordered structure with space group Fm-3m, a = 0.6017 nm. And the crystal structure for the Half-Heusler compound ? (NiMnSb) is C1b-type (F-43m) with a = 0.5961 nm. The approximate homogeneity ranges of the two ternary compounds ? and ? at 773 K were investigated.

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PHASE EQUILIBRIUM IN SYSTEM (LiF)2 – Li2CO3 – Li2SO4

IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA ◽

10.6060/ivkkt.20196201.5727 ◽

2018 ◽

Vol 62 (1) ◽

pp. 20-25

Author(s):

Zaira N. Verdieva ◽

Alibek B. Alkhasov ◽

Nadinbeg N. Verdiev ◽

Gadzhi A. Rabadanov ◽

Patimat A. Arbukhanova ◽

...

Keyword(s):

Lithium Fluoride ◽

Theoretical Calculations ◽

Liquidus Surface ◽

Experimental Studies ◽

Polythermal Section ◽

Lithium Carbonate ◽

Physicochemical Analysis ◽

Crystallization Field ◽

Thermal Method ◽

Carbonate Decomposition

The liquidus surface of the system (LiF)2-Li2SO4-Li2CO3 was studied by the calculated and differential thermal method of physicochemical analysis. An analysis of the systems of lower dimensionality of the facets of the investigated object showed that the most informative, for the experimental study, is the sections located in the crystallization field of lithium fluoride. A study of the DTA of a number of compositions located at the initially chosen polythermal section in the lithium fluoride crystallization field, the ratios of lithium sulfate and carbonate in the eutectic are determined. The composition of the triple eutectic was revealed by studying a non-invariant cut from the vertex of the triangle (LiF), through a point showing a constant ratio of sulfate and lithium carbonate in the eutectic, to the fusion of the thermal effects of the primary and tertiary crystallizations. The complexity of the study was that lithium carbonate is the most fusible component in the system, and according to the literature, after the melting of lithium carbonate, decomposition begins, which greatly complicates the interpretation of research results. In order to avoid the decomposition of lithium carbonate, each experimentally studied composition was heated to the melting temperature of lithium carbonate and kept in isothermal mode, at a temperature below its melting. Thus, the theoretical melting calculations and the region of location of the non-invariant composition have been extrapolated, allowing to limit the number of experimentally studied samples, and the subsequent experimental investigation of DTA of two polythermal sections revealed a eutectic composition crystallizing at 476 ° C and containing LiF-20 eq.%, Li2SO4 - 51 eq.%, Li2CO3 – 29 eq.%. The discrepancies between theoretical calculations and experimental studies are 8.3% in temperature and 5.05% in composition.

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The Liquidus Surface of the Ternary System Cu-In-Ti

Materials Science Forum ◽

10.4028/www.scientific.net/msf.502.95 ◽

2005 ◽

Vol 502 ◽

pp. 95-98 ◽

Cited By ~ 4

Author(s):

Adina Berbecaru ◽

Julius C. Schuster

Keyword(s):

Liquid Phase ◽

Ternary System ◽

Liquidus Surface ◽

Ternary Eutectic ◽

Reaction Scheme ◽

Lead Free ◽

Arc Melting ◽

Congruently Melting ◽

Xrd Phase Analysis ◽

Primary Crystallisation

The phases occurring upon lead free soldering of copper substrates using indium, which contains for improved wetting additions of Ti, belong to the ternary system Cu-In-Ti. Thus, the liquidus surface of the ternary system Cu-In-Ti is determined using DTA data. Alloys were prepared from high purity metals by arc melting under pure argon. Before measuring the heating curves, all alloys were equilibrated at appropriate temperatures and XRD phase analysis were performed. A reaction scheme linking the phase equilibria found in the annealed alloys to the liquid phase is obtained. A projection of the resulting liquidus surface, which is dominated by the primary crystallisation field of the congruently melting Heusler phase t1-Cu2TiAl, is presented. In the In-rich composition corner the liquid phase solidifies in a ternary eutectic (In) + Ti2In5 + Cu11In9 at 155°C.

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Corrigendum to “Liquidus surface projection for the CaTe–In–Te quasi-ternary system” [J. Alloys Comp. 619 (2015) 319–324]

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2015.01.002 ◽

2015 ◽

Vol 628 ◽

pp. 433

Author(s):

N.I. Yagubov ◽

Imir Aliyev ◽

C.A. Veliyev ◽

Ali Riza Kul

Keyword(s):

Ternary System ◽

Liquidus Surface ◽

Surface Projection ◽

Liquidus Surface Projection ◽

Quasi Ternary System

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STUDY OF THE CU3AS4TE9-CRASTE3 SECTION OF THE AS2Te3-Cr2Te3-CuTe quasi-ternary system

EurasianUnionScientists ◽

10.31618/esu.2413-9335.2021.1.91.1487 ◽

2021 ◽

pp. 40-44

Author(s):

S. Ismailova

Keyword(s):

Phase Diagram ◽

Solid Solution ◽

Ternary System ◽

Solid Solutions ◽

Room Temperature ◽

Physicochemical Analysis ◽

Binary Section ◽

Quasi Binary Section ◽

Quasi Ternary System

Chemical interactions in the system were studied by methods of physicochemical analysis (DTA, XRD, MSA, determination of density and microhardness) and its phase diagram was constructed. It was found that the phase diagram of the system is a non-quasi-binary section of the quasi-ternary system As2Te3-Cr2Te3-CuTe. At room temperature in the system of solid solutions based on Cu3As4Te9 reaches - 5 mol. % CrAsTe3. The region of the solid solution based on the CrAsTe3 compound has not been established in practice. The dependence of the microhardness and density of alloys of the Cu3As4Te9-CrAsTe3 system on the composition has been investigated.

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Liquidus surface projection for the CaTe–In–Te quasi-ternary system

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2014.07.127 ◽

2015 ◽

Vol 619 ◽

pp. 319-324 ◽

Cited By ~ 1

Author(s):

N.I. Yagubov ◽

Imir Aliyev ◽

Ceyran Veliyev ◽

Ali Riza Kul

Keyword(s):

Ternary System ◽

Liquidus Surface ◽

Surface Projection ◽

Liquidus Surface Projection ◽

Quasi Ternary System

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Phase equilibria of the Ag–Sn–Cu ternary system

Journal of Materials Research ◽

10.1557/jmr.2004.0296 ◽

2004 ◽

Vol 19 (8) ◽

pp. 2298-2305 ◽

Cited By ~ 29

Author(s):

Yee-wen Yen ◽

Sinn-wen Chen

Keyword(s):

Ternary System ◽

Phase Equilibria ◽

Binary Systems ◽

Stable Phase ◽

Thermodynamic Models ◽

Ternary Interaction ◽

Isothermal Sections ◽

Stability Diagrams ◽

Binary Compounds ◽

Good Agreement

Phase equilibria of the Ag–Sn–Cu ternary system have been determined experimentally as well as using the calculation of phase diagram (CALPHAD) method. Various Ag–Sn–Cu alloys were prepared to study the isothermal sections of the Ag–Sn–Cu ternary system at 240 and 450 °C. No ternary compounds were found and all the binary compounds had only limited ternary solubility. The ∈1–Cu3Sn phase is a very stable phase. It is in equilibrium with the Ag, ζ–Ag4Sn, ∈2–Ag3Sn, η–Cu6Sn5, and Cu phases at 240 °C, and is in equilibrium with the Ag, ζ, ∈2, L, and δ–Cu4Sn phases at 450 °C. Thermodynamic models of the Ag–Sn–Cu ternary system were developed based on available thermodynamic models of the constituent binary systems without introducing ternary interaction parameters. The isothermal sections at 240 and 450 °C were calculated, and the results were in good agreement with those determined experimentally. In addition to the isothermal sections, stability diagrams of Sn and Cu were calculated as well.

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On the Liquidus Surface and Reaction Scheme of the Ternary System Cu-Si-Ti

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.127.15 ◽

2007 ◽

Vol 127 ◽

pp. 15-18 ◽

Cited By ~ 2

Author(s):

Adina Berbecaru ◽

Masaaki Naka ◽

Julius C. Schuster

Keyword(s):

Isothermal Section ◽

Ternary System ◽

Crystal Structures ◽

Liquidus Surface ◽

Reaction Scheme ◽

Cast Alloys ◽

Using Data ◽

Primary Crystallisation

The ternary system Cu-Si-Ti was investigated using XRD, SEM-EDX, and DTA. The existence of two ternary phases τ1-CuSiTi and τ2-TiSi2-xCux as well as their crystal structures are confirmed. The isothermal section at 800°C is corroborated. From DTA data of equilibrated alloys a reaction scheme linking the isotherm at 700°C with the liquidus surface is derived. Using data on primary crystallisation of as cast alloys a projection of the liquidus surface is proposed.

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