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Journal of Materials Science

, Volume 44, Issue 8, pp 2089–2096 | Cite as

Effect of small amount of rare earth addition on electromigration in eutectic SnBi solder reaction couple

  • Hongwen HeEmail author
  • Guangchen Xu
  • Fu Guo
Article

Abstract

Effect of small amount of rare earth (RE) addition on electromigration behavior of Cu/SnBi/Cu solder reaction couple (SRC) was investigated with current density of 5 × 103 A/cm2 at room temperature and 100 °C, respectively. Results indicate that tiny RE addition to eutectic SnBi solder alloy can make the energy of interfaces and grain boundaries decrease, restrain the movement of dislocations and grain boundary sliding. Therefore, phase segregation and IMC growth will be effectively suppressed which enhances the electromigration resistance.

Keywords

Rare Earth Solder Joint Solder Alloy Solder Ball Solder Matrix 

Notes

Acknowledgement

The authors acknowledge the financial support of this work from the New Century Talent Support Program, Ministry of Education, and the Funding Project PHR (IHLB).

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.College of Materials Science and EngineeringBeijing University of TechnologyBeijingChina

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