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

Research output: Contribution to journalArticlepeer-review

66 Citations (Scopus)


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


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