Finite-Elemente-Modellierung von nano-porösem gesinterten Silber unter Verwendung von Computertomographiebildern

Translated title of the contribution: Finite element modeling of nano porous sintered silver material using computed tomography images

B. Meyghani, M. Awang, P. Bokam, B. Plank, C. Heinzl, Kim Shyong Siow

Research output: Contribution to journalArticle

Abstract

Limitations in the packaging industry require improvements in lead-based microelectronics, because regulations restricting hazardous substances have ended the use of conventional lead-based solders. Sintered silver paste presents an alternative method for bonding chips to a substrate because it has low sensitivity to the oxidation, high melting point, and improved thermal and electrical conductivity. Due to the sintering process, however, the silver exhibits a significant pore fraction that substantially reduces the density of the material compared to bulk silver. The traits of the sintered silver pastes are affected by the pore distribution; hence, it can be considered as a significant factor in modelling the behaviour of the whole electronic system under operating conditions. This study defines the influence of the morphology and pore distribution on the response of the silver material. The quality of tomographic images was improved through coding a program in MATLAB®. Finite element software ABAQUS® was employed to evaluate the elastic properties of the material. To validate the model, the results have gone through several studies to determine changes of the material properties.

Original languageGerman
Pages (from-to)533-538
Number of pages6
JournalMaterialwissenschaft und Werkstofftechnik
Volume50
Issue number5
DOIs
Publication statusPublished - 1 May 2019

Fingerprint

Silver
Tomography
tomography
silver
Ointments
porosity
Lead
Hazardous Substances
Adhesive pastes
ABAQUS
solders
packaging
microelectronics
Microelectronics
Soldering alloys
MATLAB
melting points
Melting point
Thermal conductivity
Materials properties

Keywords

  • finite element modelling
  • Sintered silver
  • sintering process
  • tomographic images

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Finite-Elemente-Modellierung von nano-porösem gesinterten Silber unter Verwendung von Computertomographiebildern. / Meyghani, B.; Awang, M.; Bokam, P.; Plank, B.; Heinzl, C.; Siow, Kim Shyong.

In: Materialwissenschaft und Werkstofftechnik, Vol. 50, No. 5, 01.05.2019, p. 533-538.

Research output: Contribution to journalArticle

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