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

2007 ◽  
Vol 127 ◽  
pp. 15-18 ◽  
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.

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

2005 ◽  
Vol 502 ◽  
pp. 95-98 ◽  
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.

scholarly journals Experimental determination of phase equilibria at 900°C and liquidus surface in the Cu-Ni-Ti system

2018 ◽  
Vol 54 (2) ◽  
pp. 209-223
Author(s):  
B. Jin ◽  
X. Lu ◽  
S. Liu ◽  
D. Huang ◽  
Y. Du
Keyword(s):  
Ternary System ◽  
Phase Equilibria ◽  
Liquidus Projection ◽  
Liquidus Surface ◽  
Ternary Eutectic ◽  
Reaction Scheme ◽  
Primary Phase ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Cast Alloys

Phase equilibria at 900?C and the liquidus projection in the Ni-rich corner of the Cu-Ni-Ti ternary system were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), electron probe microanalysis (EPMA) and differential scanning calorimetry (DSC) on the annealed and as-cast alloys. For the isothermal section at 900 ?C, the hightemperature ternary compound (?5) reported in the literature was not observed but the corresponding low-temperature compound (?6) was identified to be stable at this temperature. For the liquidus projection, the primary phase ?4 was experimentally determined for the first time, and the related solidification paths were identified through the experimental data on the as-cast alloys. One solid-state invariant reaction, NiTi + ?4 ? ?1 + Ni3Ti at 1098.3?C and two ternary eutectic reactions, L ? ?1 + ?4 + NiTi at 1126?C and L ? ?1 + ?6 + fcc(Cu,Ni) at 1069.5?C were detected. Scheil reaction scheme was also presented accordingly. All obtained experimental results will provide reliable information for further thermodynamic optimization of the Cu-Ni-Ti ternary system.

On the reaction scheme and liquidus surface in the ternary system Al–Si–Ti

2008 ◽  
Vol 99 (7) ◽  
pp. 705-711 ◽  
Author(s):  
Shuhong Liu ◽  
Franz Weitzer ◽  
Julius C. Schuster ◽  
Nataliya Krendelsberger ◽  
Yong Du
Keyword(s):  
Ternary System ◽  
Liquidus Surface ◽  
Reaction Scheme

Isothermal section of the phase diagram and crystal structures of the compounds in the ternary system Tm–Cu–Sb at 870 K

2017 ◽  
Vol 69 ◽  
pp. 7-12
Author(s):  
L.O. Fedyna ◽  
A.O. Fedorchuk ◽  
V.M. Mykhalichko ◽  
Z.M. Shpyrka ◽  
M.F. Fedyna
Keyword(s):  
Phase Diagram ◽  
Isothermal Section ◽  
Ternary System ◽  
Crystal Structures

Ternary System Tm—Cu—Ge: Isothermal Section of the Phase Diagram at 870 K and Crystal Structures of the Compounds.

ChemInform ◽  
2004 ◽  
Vol 35 (24) ◽  
Author(s):  
L. O. Fedyna ◽  
O. I. Bodak ◽  
Ya. O. Tokaychuk ◽  
M. F. Fedyna ◽  
I. R. Mokra
Keyword(s):  
Phase Diagram ◽  
Isothermal Section ◽  
Ternary System ◽  
Crystal Structures

Phase Diagram Relationships in the Ternary System Ti-Ai-V

1990 ◽  
Vol 213 ◽  
Author(s):  
Mohan Paruchuri ◽  
T.B. Massalski
Keyword(s):  
Phase Diagram ◽  
Isothermal Section ◽  
Solid State ◽  
Ternary System ◽  
Phase Equilibria ◽  
Liquidus Surface ◽  
Experimental Techniques

ABSTRACTLiquid-solid and solid state phase equilibria in the ternary system Ti-Al-V have been studied using a combination of several experimental techniques. A likely surface of primary seperation (i.e., the liquidus surface) is proposed in the form of the usual projection on the triangular base and the directions of the monovariant lines are defined. Four ternary invariant reactions have been identified in this system. Solid state equilibria have been determined at 900°C and are presented in the form of an isothermal section through the phase diagram. These are very similar to the relationships reported at 800°C by Hashimoto et al. [1].

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

2021 ◽  
Vol 23 (1) ◽  
pp. 16-24
Author(s):  
Ikhtiyar Bahram oglu Bakhtiyarly ◽  
Ruksana Jalal kizi Kurbanova ◽  
Shahri Seyfaly kizi Abdullaeva ◽  
Ziyafat Mamed kizi Mukhtarova ◽  
Fatmahanum Mamed Mammadova
Keyword(s):  
Ternary System ◽  
Binary Systems ◽  
Liquidus Surface ◽  
Equilibrium Points ◽  
Experimental Studies ◽  
Physicochemical Analysis ◽  
Monovariant Equilibrium ◽  
Binary Compounds ◽  
Quasi Ternary System ◽  
Primary Crystallisation

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.

On the Reaction Scheme and Liquidus Surface in the Ternary System Al-Fe-Si

2007 ◽  
Vol 38 (8) ◽  
pp. 1681-1691 ◽  
Author(s):  
Nataliya Krendelsberger ◽  
Franz Weitzer ◽  
Julius C. Schuster
Keyword(s):  
Ternary System ◽  
Liquidus Surface ◽  
Reaction Scheme
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