Solid–state diffusion–controlled growth of the phases in the Au–Sn system

Baheti, Varun A.; Kashyap, Sanjay; Kumar, Praveen; Chattopadhyay, K.; Paul, Aloke

doi:10.1080/14786435.2017.1392052

Cited by 23 publications

(10 citation statements)

References 25 publications

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“…Hence, estimation of diffusion coefficient can be made to predict the microstructure and characteristics of diffusion zone after homogenization annealing. It may be pointed out that K in electroplated diffusion couples shows a higher value than bulk diffusion couples and therefore it would lead to a higher diffusion coefficient than the actual value of bulk diffusion coefficient [10]. It is evident from Fig.…”

Section: Resultsmentioning

confidence: 88%

Phase growth in alpha brass with thin layer of electroplated zinc during homogenization annealing

Basak¹

2021

SN Appl. Sci.

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Diffusion mechanism in between thin electroplated Zn coating and Cu – 37wt%Zn substrate during homogenization annealing substantially depends on electroplating parameters. Experiments carried out to determine phase growth and solute profile at various current densities reveal that the increase of current density tends to reduce phase growth. The coefficient of phase growth has been determined and is found to be dependent on the relative density of plating layer.

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Section: Resultsmentioning

confidence: 88%

Phase growth in alpha brass with thin layer of electroplated zinc during homogenization annealing

Basak¹

2021

SN Appl. Sci.

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“…2b) are found to be same. In past, diffusion couple technique is used to validate PBC in Co-Ta [6], Co-Mo [7] and Au-Sn [8] systems, in a similar fashion as done here.…”

Section: Phase Evolutionsmentioning

confidence: 99%

Phase evolutions and growth kinetics in the Co–Sn system

Baheti

2019

SN Appl. Sci.

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Co/Sn diffusion couples are annealed at 175-220 °C. The reaction phase CoSn 3 is found to have a narrow homogeneity range of 2 at% with composition 74-76 at% Sn. The growth of this phase is found to be reaction-controlled initially followed by diffusion-controlled later. The marker experiment indicates that Sn is the faster diffusing element in this phase. The CoSn 2 phase is found to grow in the Co/CoSn 3 incremental couples at 200-220 °C.

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“…Note here that the interdiffusion fluxes ̃ is equal to zero at the un-affected parts of the diffusion couple, = −∞ and = +∞ , while ̃ * is the fixed value (for certain annealing time t) at the location of interest = * in the above Equations (17). Next, we aim to rewrite the above equations with respect to interdiffusion fluxes ̃ of both components to get an expression for the interdiffusion coefficient ̃.…”

Section: Derivation Of the Interdiffusion Coefficient With Respect Tomentioning

confidence: 99%

“…These will then allow us to compare the data of a particular diffusion parameter when estimated following different relations utilizing 𝑌 𝑁 𝐵 and 𝑌 𝐶 𝐵 . It should be noted here that the estimation of the tracer diffusion coefficients following the diffusion couple technique is considered indirect but reliable [14], [15], [16], [17], [18]. These are important to correlate the diffusion data with defects assisting the diffusion process in the absence of thermodynamic driving forces.…”

Section: Interdiffusion and Intrinsic Diffusion Coefficients With Res...mentioning

confidence: 99%

Development of different methods and their efficiencies for the estimation of diffusion coefficients following the diffusion couple technique

Baheti

Paul

2018

Acta Materialia

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The interdiffusion coefficients are estimated either following the Wagner's method expressed with respect to the composition (mol or atomic fraction) normalized variable after considering the molar volume variation or the den Broeder's method expressed with respect to the concentration (composition divided by the molar volume) normalized variable. On the other hand, the relations for estimation of the intrinsic diffusion coefficients of components as established by van Loo and integrated diffusion coefficients in a phase with narrow homogeneity range as established by Wagner are currently available with respect to the composition normalized variable only. In this study, we have first derived the relation proposed by den Broeder following the line of treatment proposed by Wagner. Further, the relations for estimation of the intrinsic diffusion coefficients of the components and integrated interdiffusion coefficient are established with respect to the concentration normalized variable, which were not available earlier. The veracity of these methods is examined based on the estimation of data in Ni-Pd, Ni-Al and Cu-Sn systems. Our analysis indicates that both the approaches are logically correct and there is small difference in the estimated data in these systems although a higher difference could be found in other systems. The integrated interdiffusion coefficients with respect to the concentration (or concentration normalized variable) can only be estimated considering the ideal molar volume variation. This might be drawback in certain practical systems.

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Solid–state diffusion–controlled growth of the phases in the Au–Sn system

Cited by 23 publications

References 25 publications

Phase growth in alpha brass with thin layer of electroplated zinc during homogenization annealing

Phase growth in alpha brass with thin layer of electroplated zinc during homogenization annealing

Phase evolutions and growth kinetics in the Co–Sn system

Development of different methods and their efficiencies for the estimation of diffusion coefficients following the diffusion couple technique

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