Prediction of concentration profiles in a diffusion joint

Esfakur Rahman; M. N. Cavalli

Prediction of concentration profiles in a diffusion joint

School of Science, Engineering & Technology (Harrisburg)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Concentration dependency of diffusivity in a multi-component diffusion system makes it complicated to predict the concentration profiles of diffusing species. This so called chemical diffusivity is expressed as a function of thermodynamic and kinetic data. DICTRA software can calculate the concentration profiles using appropriate mobility and thermodynamic data. It can also optimize the diffusivity data using experimental diffusivity data and store as mobility data which is a linear function of temperature. In this work, diffusion bonding of Ni using Cu interlayer is reported. The mobility parameters of Ni-Cu alloy binary systems were optimized using DICTRA/Thermocalc software from the available self, tracer and chemical diffusion coefficients. The optimized mobility parameters were used to simulate concentration profiles of Ni-Cu diffusion joint using DICTRA/Thermocalc software. The calculated and experimental concentration profiles agreed well at 1100°C. Agreement between the simulated and experimental profiles was less good at 1050°C due to the grain boundary contribution to the overall diffusion.

Original language	English (US)
Title of host publication	Materials Science and Technology Conference and Exhibition 2011, MS and T'11
Pages	1564-1574
Number of pages	11
State	Published - Dec 1 2011
Event	Materials Science and Technology Conference and Exhibition 2011, MS and T'11 - Columbus, OH, United States Duration: Oct 16 2011 → Oct 20 2011

Publication series

Name	Materials Science and Technology Conference and Exhibition 2011, MS and T'11
Volume	2

Other

Other	Materials Science and Technology Conference and Exhibition 2011, MS and T'11
Country	United States
City	Columbus, OH
Period	10/16/11 → 10/20/11

All Science Journal Classification (ASJC) codes

Materials Science(all)

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@inproceedings{367e3de6f82741879b93a0f94e474416,

title = "Prediction of concentration profiles in a diffusion joint",

abstract = "Concentration dependency of diffusivity in a multi-component diffusion system makes it complicated to predict the concentration profiles of diffusing species. This so called chemical diffusivity is expressed as a function of thermodynamic and kinetic data. DICTRA software can calculate the concentration profiles using appropriate mobility and thermodynamic data. It can also optimize the diffusivity data using experimental diffusivity data and store as mobility data which is a linear function of temperature. In this work, diffusion bonding of Ni using Cu interlayer is reported. The mobility parameters of Ni-Cu alloy binary systems were optimized using DICTRA/Thermocalc software from the available self, tracer and chemical diffusion coefficients. The optimized mobility parameters were used to simulate concentration profiles of Ni-Cu diffusion joint using DICTRA/Thermocalc software. The calculated and experimental concentration profiles agreed well at 1100°C. Agreement between the simulated and experimental profiles was less good at 1050°C due to the grain boundary contribution to the overall diffusion.",

author = "Esfakur Rahman and Cavalli, {M. N.}",

year = "2011",

month = dec,

day = "1",

language = "English (US)",

isbn = "9781618392619",

series = "Materials Science and Technology Conference and Exhibition 2011, MS and T'11",

pages = "1564--1574",

booktitle = "Materials Science and Technology Conference and Exhibition 2011, MS and T'11",

note = "Materials Science and Technology Conference and Exhibition 2011, MS and T'11 ; Conference date: 16-10-2011 Through 20-10-2011",

}

Rahman, E & Cavalli, MN 2011, Prediction of concentration profiles in a diffusion joint. in Materials Science and Technology Conference and Exhibition 2011, MS and T'11. Materials Science and Technology Conference and Exhibition 2011, MS and T'11, vol. 2, pp. 1564-1574, Materials Science and Technology Conference and Exhibition 2011, MS and T'11, Columbus, OH, United States, 10/16/11.

TY - GEN

T1 - Prediction of concentration profiles in a diffusion joint

AU - Rahman, Esfakur

AU - Cavalli, M. N.

PY - 2011/12/1

Y1 - 2011/12/1

N2 - Concentration dependency of diffusivity in a multi-component diffusion system makes it complicated to predict the concentration profiles of diffusing species. This so called chemical diffusivity is expressed as a function of thermodynamic and kinetic data. DICTRA software can calculate the concentration profiles using appropriate mobility and thermodynamic data. It can also optimize the diffusivity data using experimental diffusivity data and store as mobility data which is a linear function of temperature. In this work, diffusion bonding of Ni using Cu interlayer is reported. The mobility parameters of Ni-Cu alloy binary systems were optimized using DICTRA/Thermocalc software from the available self, tracer and chemical diffusion coefficients. The optimized mobility parameters were used to simulate concentration profiles of Ni-Cu diffusion joint using DICTRA/Thermocalc software. The calculated and experimental concentration profiles agreed well at 1100°C. Agreement between the simulated and experimental profiles was less good at 1050°C due to the grain boundary contribution to the overall diffusion.

AB - Concentration dependency of diffusivity in a multi-component diffusion system makes it complicated to predict the concentration profiles of diffusing species. This so called chemical diffusivity is expressed as a function of thermodynamic and kinetic data. DICTRA software can calculate the concentration profiles using appropriate mobility and thermodynamic data. It can also optimize the diffusivity data using experimental diffusivity data and store as mobility data which is a linear function of temperature. In this work, diffusion bonding of Ni using Cu interlayer is reported. The mobility parameters of Ni-Cu alloy binary systems were optimized using DICTRA/Thermocalc software from the available self, tracer and chemical diffusion coefficients. The optimized mobility parameters were used to simulate concentration profiles of Ni-Cu diffusion joint using DICTRA/Thermocalc software. The calculated and experimental concentration profiles agreed well at 1100°C. Agreement between the simulated and experimental profiles was less good at 1050°C due to the grain boundary contribution to the overall diffusion.

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T3 - Materials Science and Technology Conference and Exhibition 2011, MS and T'11

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BT - Materials Science and Technology Conference and Exhibition 2011, MS and T'11

T2 - Materials Science and Technology Conference and Exhibition 2011, MS and T'11

Y2 - 16 October 2011 through 20 October 2011

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