Wetting behaviour of Cu–Ga alloys on 304L steel

Silze, Frank; Wiehl, Gunther; Kaban, I.; Wendrock, H.; Gemming, Thomas; Kühn, U.; Eckert, J.; Pauly, S.

doi:10.1016/j.matdes.2015.11.034

Cited by 9 publications

(5 citation statements)

References 26 publications

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“…For Cu-rich alloys, the CFM predicted surface tension values (Fig. 12; curve 1) are in a good agreement with the data reported in [31], otherwise that data is closer to Butler's isotherm (Fig. 12; curve 2).…”

Section: Cu-gasupporting

confidence: 82%

“…To this aim, the input data, such as the excess Gibbs free energy [17], the surface tension reference data of liquid Cu [22] and Ga [30] pure metals and their molar volumes [23] have been used (Table 4) for the calculations and the model predicted surface tension isotherms (Fig. 12) were compared among them as well as with available experimental dataset [31]. Maximum difference between the surface tension isotherms is about 11 %, and this value may be considered as upper limit that may indicate the contribution of the short-range ordering to the surface tension of Cu-Ga melts.…”

Section: Cu-gamentioning

confidence: 99%

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Thermophysical Properties of Cu-Based Subsystems of High-Entropy Alloys

Plevachuk,

Romaka,

Janotova

et al. 2024

DDF

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According to the well-known concept of multicomponent high-entropy alloys, high entropy of mixing can stabilize the formation of solid solutions (simple bcc or fcc crystal structure) during solidification. Stabilization of the solid solution and prevention of the formation of intermetallic phases during solidification is provided by the high entropy of mixing in the solid and liquid states. High-entropy alloys have increased strength, high hardness, thermal stability in combination with good resistance to oxidation and corrosion. These properties allow to significantly expand the scope of these alloys. In this work, the electrical resistivity, thermoelectric power and surface tension of binary Cu–Sn, Cu–Ga and Cu–Bi alloys, which are the sub-system components of model low-temperature high-entropy Bi–Cu–Ga–Pb–Sn alloys, have been studied in a wide temperature range including solid and liquid states. The lack of the surface tension data of the above-mentioned alloys is compensated by the model predicted values.

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Section: Cu-gasupporting

confidence: 82%

Section: Cu-gamentioning

confidence: 99%

Thermophysical Properties of Cu-Based Subsystems of High-Entropy Alloys

Plevachuk,

Romaka,

Janotova

et al. 2024

DDF

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“…With an increasing number of components in the melt, the absolute values of the activation energy ε and entropy of activation of viscous flow ∆S # are reduced. In experiments with liquid alloy CuPb, lower viscosity values than those specified in previous reports [20][21][22] were recorded, which the authors attribute to the equiatomic alloy composition (up to 0.01 g). The prevailing feature of the liquid Cu50Pb50 system is the existence of a monotectic turning.…”

Section: Fig 2 the Dependence Of Ln ν On (1000/t) For Melts Upon Coomentioning

confidence: 51%

Viscosity of CuPb, CuPbSn, CuPbSnGa and CuPbSnGaBi melts of equiatomic compositions

Чикова

Цепелев

Shmakova

2019

Acta Metall. Slovaca

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We investigated the viscosity of CuPb, CuPbSn, CuPbSnGa and CuPbSnGaBi melts of equiatomic compositions by the method of damped torsion vibrations of a crucible. We see the melts of equiatomic composition as the melts high-entropy. All the investigated melts demonstrated the different temperature dependences of viscosity for heating and cooling. There is an anomalous reduction in viscosity resulted when the melt is heated to a specific temperature. The anomalous behaviour for viscosity we interpreted in terms of melt structure. This structural changes in the melt resulted when the melt is heated to a specific temperature. The microstructure of CuPbSnGaBi ingot of equiatomic composition we investigated using optical microscopy and measurement of microhardness. Collations data of the microstructures with of the microhardness gave three structural components: CuGa2 dendrites, (Sn) + (Bi) + Bi3Pb7 ternary eutectic and rounded Pb inclusions having dimensions of »5 mm.

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“…Wetting of the surface of steel products with liquid metals under conditions of diffusion interaction between melt and substrate and also microstructure of transition layers has been actively studied by many researchers [1][2][3][4][5][6][7][8][9][10][11][12]. It is known that process of diffusion interaction of liquid and solid metals is largely determined by surface phenomena at interface (adhesion, wetting, adsorption at al.)…”

Section: Introductionmentioning

confidence: 99%

Wetting of Low Carbon Steel by High-Entropy Melts CuSnBiPbGa, CuSnBiPbIn and CuSnBiInCd and Formed Structure of Diffusion Layers

Чикова

Бродова²,

Цепелев

et al. 2020

SSP

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We present a result of a study of reactive wetting of surface of low carbon steel by liquid alloys CuSnBiPbGa, CuSnBiPbIn and CuSnBiInCd of equiatomic composition. Dependences of contact angle and spot diameter of wetted surface on temperature and time were studied. Liquid alloy CuSnBiPbGa begins wetting of surface of steel at 900 °C; spreading rate at higher temperatures increased by 8 times. Liquid alloy CuSnBiPbIn begins wetting surface of steel at 780°C, but spreading speed is almost unchanged with the further increase in temperature. Liquid alloy CuSnBiInCd begins wetting of surface of steel at a temperature of 570°C, and spreading is in a flash in nature. We studied microstructure and chemical composition of diffusion layers, formed at the spreading of liquid alloys of equiatomic composition CuSnBiPbGa, CuSnBiPbIn and CuSnBiInCd on steel surface. In all experiments at boundary with substrate a ductile transition layer of a solid solution of iron-based is formed. The thickness of diffusion layer side depends on the alloy composition. The widest diffusion layers formed for alloy CuSnBiInCd, and the most narrow - for alloy CuSnBiPbGa. We detected in segregations of copper and gallium atoms for bimetallic sample "CuSnBiPbGa+steel", of copper and tin atoms for samples "CuSnBiPbIn+steel" and "CuSnBiInCd+steel" in diffusion layers. The results of these studies have significance for the design of soldering technology and application of protective coatings on steel products.

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Wetting behaviour of Cu–Ga alloys on 304L steel

Cited by 9 publications

References 26 publications

Thermophysical Properties of Cu-Based Subsystems of High-Entropy Alloys

Thermophysical Properties of Cu-Based Subsystems of High-Entropy Alloys

Viscosity of CuPb, CuPbSn, CuPbSnGa and CuPbSnGaBi melts of equiatomic compositions

Wetting of Low Carbon Steel by High-Entropy Melts CuSnBiPbGa, CuSnBiPbIn and CuSnBiInCd and Formed Structure of Diffusion Layers

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