An Experimental Study of Transient Liquid Phase Bonding of the Ternary Ag-Au-Cu System Using Differential Scanning Calorimetry

Kuntz, M.; Panton, B.; Wasiur-Rahman, S.; Zhou, Yunhong; Corbin, Stephen F.

doi:10.1007/s11661-013-1704-0

Cited by 19 publications

(4 citation statements)

References 23 publications

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“…When the composition value for Ag is small, Au atoms are present on the surface in a smaller amount than Ag atoms for Au-rich nanoalloys. This result of the atomic arrangement and surface segregation of the Ag atoms was observed in other nanoalloys [23,33,36], and also observed in experimental studies of binary and ternary nanoalloys based on Ag [65][66][67][68][69]. The snapshots reveal that at 500 K a solidification is already observed in the structure of the systems and at 3 K they have a major fraction of FCC and HCP.…”

Section: Composition Influence On Solidification Behaviorsupporting

confidence: 77%

The composition effect on the structural and thermodynamic properties of Cu–Ag–Au ternary nanoalloys: a study via molecular dynamics approach

Cuba-Supanta,

Amao,

Quispe-Huaynasi

et al. 2024

Modelling Simul. Mater. Sci. Eng.

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Metal ternary nanoalloys or trimetallic nanoparticles have emerged, in recent years, as novel and relevant materials in different fields due to the synergy of three metals in a single system that leads to unique physicochemical properties as compared to mono- and bimetallic nanoparticles. In this study, the influence of composition on the structural and thermodynamic properties of Cu-Ag-Au nanoalloys with 5083 atoms is analyzed using molecular dynamics simulations. Relevant thermodynamic quantities are used to describe the melting and solidification behaviors of three models of Cu-Ag-Au nanoalloys. Our results indicate that the melting temperature presents linear and quadratic dependencies with the composition, i.e., for Cu33 Ag67−x Aux , Ag33 Cu67−x Aux , and Au33 Ag67−x Cux are Tm = 912.6 + 1.9x, Tm = 882.3 + 2.7x, and Tm = 1056.6 − 4.9x + 0.07x2, respectively. In addition, most Ag atoms segregate to the surface and the Au and Cu atoms are localized in the center of the nanoalloy during the heating process, and this trend is maintained in the cooling process. The solidification temperature does not have an explicit correlation with the composition. Furthermore, the structural analysis of cooled nanoalloys exhibits local FCC and HCP symmetries, and the excess energy shows that Cu33Ag27Au40, Au33Ag17Cu50, and Ag33Cu37Au30 are relatively more stable to form nanoalloys. Finally, the possibility of controlling the composition in these metal nanoalloys opens up potential applications in plasmonic, catalysis, and bactericidal (by Ag surface segregation) fields.

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Section: Composition Influence On Solidification Behaviorsupporting

confidence: 77%

The composition effect on the structural and thermodynamic properties of Cu–Ag–Au ternary nanoalloys: a study via molecular dynamics approach

Cuba-Supanta,

Amao,

Quispe-Huaynasi

et al. 2024

Modelling Simul. Mater. Sci. Eng.

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“…The following works were consulted: Butrymowicz, et al, 1974;Kuntz, et al, 2013;Prince, Velikanova and Turchanin, 2006;Roberts, 1973, p.117; ASM Metals Handbook.…”

Section: Notesmentioning

confidence: 99%

Experimental Replication of a Granulated Gold Bead from an Ancient Tomb at Bat, Oman

Loepp¹,

Maass²

2017

METALLA

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During excavation of a tomb at Bat, Oman, an unusual gold bead entirely composed of 96 granules was discovered. The bead comes from an unstratified context in the bottom of the fill of the tomb, which means that it could date anywhere during the use-life of the tomb between the 3rd and 1st Millennium BC. The technical problems surrounding the manufacture of this bead are discussed and an experimental approach is used to explore a possible method of fabrication. The results of the experiments show that a combination of autogenous welding and brazing with copper salts to construct and join the individual units of the bead was successful to produce a visual replica of the bead. The method of bead construction based on the serial production of units and sub-units also has implications on the practice and organization of goldsmithing during this era.

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“…Moreover, the symmetry properties of the Ag-Au-Cu ternary alloy system were judged. On the other hand, the excess surface tensions instead of excess thermodynamic properties encountered frequently in researches calculating the Gibbs energies and enthalpies of the alloys [176][177][178][179][180][181][182][183] have been used in order to calculate the surface tension of related ternary alloys in the present study [2,46,62,86,97,100,174,[176][177][178][179][180][181][184][185][186][187][188].…”

Section: Introductionmentioning

confidence: 99%

Surface Tension and Surface Tension Assessment of Ag-Au-Cu Ternary and Sub-Binary Alloy Systems

Arslan¹,

Dogan²

2019

Hysteresis of Composites

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A brief review of measurement techniques and theoretical studies on the surface tension alloy and mixture has been presented in the present study. It is clear that the experimental determination of thermodynamic and thermophysical properties of both solid and especially liquid alloys at high temperature cases is frequently difficult technologically. In addition to this, a lack of experimental data concerning thermophysical properties of Ag-Au, Au-Cu, and Ag-Cu sub-binary systems is obvious. The theoretical thermophysical data of the Ag-Au-Cu ternary alloy systems are very scarce in the literature. Thus, the surface tensions of the alloys just mentioned above for cross sections z = x Ag /x Au = 1/3, 1/1, 3/1, 2/5, and 5/2, respectively, and their sub-binary systems are much simply calculated from the surface tensions of the Ag-Au, Au-Cu, and Ag-Cu sub-binary systems by using geometric models, such as Muggianu, Kohler, Toop, and GSM (Chou's general solution model) and Butler's equation. The predicted results in the present study show rather an agreement with the experimental results of the alloys. Therefore, it is inferred that the obtained surface tension curves for the Ag-Au-Cu ternary alloy at 1381 K are reasonable with especially those calculated from the Toop model.

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An Experimental Study of Transient Liquid Phase Bonding of the Ternary Ag-Au-Cu System Using Differential Scanning Calorimetry

Cited by 19 publications

References 23 publications

The composition effect on the structural and thermodynamic properties of Cu–Ag–Au ternary nanoalloys: a study via molecular dynamics approach

The composition effect on the structural and thermodynamic properties of Cu–Ag–Au ternary nanoalloys: a study via molecular dynamics approach

Experimental Replication of a Granulated Gold Bead from an Ancient Tomb at Bat, Oman

Surface Tension and Surface Tension Assessment of Ag-Au-Cu Ternary and Sub-Binary Alloy Systems

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