Quantitative Characterization of Porosity and Determination of Elastic Modulus for Sintered Micro-silver Joints

James Carr; Xavier Milhet; Pascal Gadaud; Severine A.E. Boyer; George E Thompson; Peter Lee

doi:10.1016/j.jmatprotec.2015.03.037

Quantitative Characterization of Porosity and Determination of Elastic Modulus for Sintered Micro-silver Joints

James Carr, Xavier Milhet, Pascal Gadaud, Severine A.E. Boyer, George E Thompson, Peter Lee

Research output: Contribution to journal › Article › peer-review

Abstract

High resolution serial block-face scanning electron microscopy has been performed on sintered micro-silver pastes that are used as lead replacement joints for die bonding. The size and spatial distributions of the porosity before and after ageing were determined by quantification of the segmented 3D images. The elastic modulus was determined by an image-based finite element model and validated by results obtained from a dynamical resonance method. In agreement with contemporary analytical models on the elastic behaviour of porous materials, the elastic modulus was found to be a function of pore fraction only. Ageing the specimens does not alter the density or Young's modulus.

Original language	English
Pages (from-to)	19-23
Number of pages	4
Journal	Journal of Materials Processing Technology
Volume	225
DOIs	https://doi.org/10.1016/j.jmatprotec.2015.03.037
Publication status	Published - May 2015

Keywords

Electron microscopy
Finite element method
Micromechanics
Microstructural evolution
Sintered joint
Tomography

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10.1016/j.jmatprotec.2015.03.037

http://www.sciencedirect.com/science/article/pii/S0924013615001405

1 Finished

Structural Evolution across multiple time and length scales
Withers, P., Cartmell, S., Cernik, R., Derby, B., Eichhorn, S., Freemont, A., Hollis, C., Mummery, P., Sherratt, M., Thompson, G. & Watts, D.
1/06/11 → 31/05/16
Project: Research

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@article{73e977cf6c93485fad49c887753289e2,

title = "Quantitative Characterization of Porosity and Determination of Elastic Modulus for Sintered Micro-silver Joints",

abstract = "High resolution serial block-face scanning electron microscopy has been performed on sintered micro-silver pastes that are used as lead replacement joints for die bonding. The size and spatial distributions of the porosity before and after ageing were determined by quantification of the segmented 3D images. The elastic modulus was determined by an image-based finite element model and validated by results obtained from a dynamical resonance method. In agreement with contemporary analytical models on the elastic behaviour of porous materials, the elastic modulus was found to be a function of pore fraction only. Ageing the specimens does not alter the density or Young's modulus.",

keywords = "Electron microscopy, Finite element method, Micromechanics, Microstructural evolution, Sintered joint, Tomography",

author = "James Carr and Xavier Milhet and Pascal Gadaud and Boyer, {Severine A.E.} and Thompson, {George E} and Peter Lee",

year = "2015",

month = may,

doi = "10.1016/j.jmatprotec.2015.03.037",

language = "English",

volume = "225",

pages = "19--23",

journal = "Journal of Materials Processing Technology",

issn = "0924-0136",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Quantitative Characterization of Porosity and Determination of Elastic Modulus for Sintered Micro-silver Joints

AU - Carr, James

AU - Milhet, Xavier

AU - Gadaud, Pascal

AU - Boyer, Severine A.E.

AU - Thompson, George E

AU - Lee, Peter

PY - 2015/5

Y1 - 2015/5

N2 - High resolution serial block-face scanning electron microscopy has been performed on sintered micro-silver pastes that are used as lead replacement joints for die bonding. The size and spatial distributions of the porosity before and after ageing were determined by quantification of the segmented 3D images. The elastic modulus was determined by an image-based finite element model and validated by results obtained from a dynamical resonance method. In agreement with contemporary analytical models on the elastic behaviour of porous materials, the elastic modulus was found to be a function of pore fraction only. Ageing the specimens does not alter the density or Young's modulus.

AB - High resolution serial block-face scanning electron microscopy has been performed on sintered micro-silver pastes that are used as lead replacement joints for die bonding. The size and spatial distributions of the porosity before and after ageing were determined by quantification of the segmented 3D images. The elastic modulus was determined by an image-based finite element model and validated by results obtained from a dynamical resonance method. In agreement with contemporary analytical models on the elastic behaviour of porous materials, the elastic modulus was found to be a function of pore fraction only. Ageing the specimens does not alter the density or Young's modulus.

KW - Electron microscopy

KW - Finite element method

KW - Micromechanics

KW - Microstructural evolution

KW - Sintered joint

KW - Tomography

U2 - 10.1016/j.jmatprotec.2015.03.037

DO - 10.1016/j.jmatprotec.2015.03.037

M3 - Article

VL - 225

SP - 19

EP - 23

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

SN - 0924-0136

ER -

Quantitative Characterization of Porosity and Determination of Elastic Modulus for Sintered Micro-silver Joints

Abstract

Keywords

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Projects

Structural Evolution across multiple time and length scales

Cite this