Investigation of interdiffusion and kirkendall effect in the Co-Ni-Fe system: III. Dependence of diffusion parameters on the initial conditions

Ugaste, Yu.E.; Kodentsov, AA Alexander; Priimets, J.

doi:10.1134/s0031918x10110086

Cited by 17 publications

(7 citation statements)

References 9 publications

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“…2(c) clearly indicates that the diffusion paths of these two couples (Co-15/25 and Co-17/23) are close to each other but do not overlap exactly. This is a well known behavior in multi-component diffusion that the diffusion paths are strongly influenced by the exact end-member compositions [42]. In Fig.…”

Section: Estimation Of Tracer Diffusion Coefficients Under Concentrat...mentioning

confidence: 76%

Tracer Diffusion Under a Concentration Gradient a Pathway for a Consistent Development of Mobility Databases in Multicomponent Alloys

et al. 2022

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Section: Estimation Of Tracer Diffusion Coefficients Under Concentrat...mentioning

confidence: 76%

Tracer Diffusion Under a Concentration Gradient a Pathway for a Consistent Development of Mobility Databases in Multicomponent Alloys

et al. 2022

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“…Many groups have studied the diffusion in Co-Fe-Ni system and its sub-systems [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23], in which most studies focused on the fcc phase in the high temperature range.…”

Section: Introductionmentioning

confidence: 99%

“…They attribute the discrepancy to a change in diffusion mechanism with temperature, which is, at high temperatures, lattice diffusion and, at lower temperatures, grain boundary diffusion. Ugaste et al studied the interdiffusion and Kirkendall effect in the binary Co-Ni, Fe-Ni and Co-Fe systems at 1000 -1300 °C [8,12], and in the ternary Co-Fe-Ni system [11,13,24] covering a large composition range.…”

Section: Introductionmentioning

confidence: 99%

Diffusion multiple study of the Co-Fe-Ni system at 800 °C

Yuan

Chen

et al. 2019

Calphad

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The Co-Fe-Ni system is a key system in a wide range of industrial applications. Knowledge of the thermodynamic and kinetic properties of the system is crucial for the alloy and process design. Although the system has been studied extensively, there remain several unexplained discrepancies between different literature data and, for mediate low temperatures, the information is scarce. In this work, a high throughput diffusion multiple approach was applied. The isothermal phase diagram section at 800 o C was determined using the Co-Fe-Ni multiple. The interdiffusion coefficients of the binary Co-Fe, Co-Ni, Fe-Ni systems and their composition dependence were calculated using the Sauer-Freise method based on the compositional profiles obtained from the diffusion multiple. Different from previous experimental results for mediate low temperature, our results coincide with the extrapolated Arrhenius temperature dependence from diffusion coefficient data at high temperature range. These observations are important for a better understanding and modelling of the interdiffusion behaviour in this key alloy system.

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“…This additional complication comes from the fact that it is not easy to control the diffusion paths which depends on the initial end member alloys [19]. Therefore, the estimated data are vague without any physical significance [5].…”

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confidence: 99%

“…Therefore, different couples will give different values of the average diffusion coefficients because of different composition range considered for the calculation of these data even if all the diffusion couples pass through the same composition of interest. Additionally, different diffusion couples prepared with different composition ranges follow different diffusion paths even when the tie lines connecting the compositions of the end members overlap[19]. It is known that the diffusion path strongly depends on the end member compositions.This lead to the estimation of different values of the average interdiffusion coefficients in different diffusion couples.…”

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confidence: 99%

A novel concept of pseudo ternary diffusion couple for the estimation of diffusion coefficients in multicomponent systems

Esakkiraja

Paul

2018

Scripta Materialia

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A pseudo ternary diffusion couple technique in a multicomponent system by simplifying the mathematical complications of Onsager formalism is proposed for the estimation of composition dependent values of the interdiffusion coefficients. This is otherwise impossible following the conventional method in a system with more than three components. Other alternative methods estimate the average diffusion coefficients over a composition range of random choice and lack physical significance. This method can be followed in a multicomponent system with any number of components on the condition that only three components develop diffusion profiles keeping others as constant.Diffusion studies in inhomogeneous multicomponent systems represent an unsolved challenge. Mathematical complexities based on Onsager's formalism [1-3] makes it impossible to estimate meaningful diffusion coefficients [4,5]. Due to relative ease, most of the experimental studies in the academic world are conducted in binary systems for an understanding of the basic atomic and phenomenological diffusion mechanisms. The studies in ternary systems are much smaller in number because of increase in complexities; however, these are used to understand diffusional interactions among components. No experimental studies are available estimating the composition dependent values of the diffusion coefficients following the conventional method in a system with a higher number of components. This is simply not possible because of mathematical complexities [4,5]. On the other hand, to achieve a property balance, most of the material systems in applications are multicomponent. Diffusion coefficients are important to understand microstructural evolution and many physicomechanical properties of a material. Therefore, this difficulty brings an unbridgeable gap between academics studying basics of diffusion mechanisms in simple systems and industries developing complicated material systems for various applications. Journal details: Scripta Materialia 147 (2018) 79-82 Mo Fe Co Ni J J J J (3d) n ii Fe Co Ni J J J (5c)Therefore, the relations above reduces similar to a ternary system in which only four interdiffusion coefficients are required to estimate. This can be easily achieved by making only two diffusion couples and by forcing them to intersect at one particular composition for

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Investigation of interdiffusion and kirkendall effect in the Co-Ni-Fe system: III. Dependence of diffusion parameters on the initial conditions

Cited by 17 publications

References 9 publications

Tracer Diffusion Under a Concentration Gradient a Pathway for a Consistent Development of Mobility Databases in Multicomponent Alloys

Tracer Diffusion Under a Concentration Gradient a Pathway for a Consistent Development of Mobility Databases in Multicomponent Alloys

Diffusion multiple study of the Co-Fe-Ni system at 800 °C

A novel concept of pseudo ternary diffusion couple for the estimation of diffusion coefficients in multicomponent systems

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Investigation of interdiffusion and kirkendall effect in the Co-Ni-Fe system: III. Dependence of diffusion parameters on the initial conditions

Cited by 17 publications

References 9 publications

Tracer Diffusion Under a Concentration Gradient a Pathway for a Consistent Development of Mobility Databases in Multicomponent Alloys

Tracer Diffusion Under a Concentration Gradient a Pathway for a Consistent Development of Mobility Databases in Multicomponent Alloys

Diffusion multiple study of the Co-Fe-Ni system at 800 °C

A novel concept of pseudo ternary diffusion couple for the estimation of diffusion coefficients in multicomponent systems

Contact Info

Product

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Diffusion multiple study of the Co-Fe-Ni system at 800 °C