Kinetics of the η-η′ Transformation in Cu6Sn 5

Kazuhiro Nogita, C. M. Gourlay, S. D. McDonald, Y. Q. Wu, J. Read, Q. F. Gu

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Cu6Sn5 is an important intermetallic compound used in lead-free soldering and anode materials for Li-ion batteries. Cu 6Sn5 exists in at least two crystal structures, with a transformation from hexagonal η-Cu6Sn5 at temperatures higher than ∼186 °C to monoclinic η′-Cu6Sn 5 at lower temperatures. Using variable temperature synchrotron X-ray diffraction analysis, the kinetics of the η-η′ transformation are investigated and a time-temperature transformation diagram is partially developed. The significance of the results in terms of phase and dimensional stability in solder joints are discussed.

Original languageEnglish
Pages (from-to)922-925
Number of pages4
JournalScripta Materialia
Issue number10
Publication statusPublished - Nov 1 2011


All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Nogita, K., Gourlay, C. M., McDonald, S. D., Wu, Y. Q., Read, J., & Gu, Q. F. (2011). Kinetics of the η-η′ Transformation in Cu6Sn 5 Scripta Materialia, 65(10), 922-925.