Creep and mechanical properties of Cu6Sn5 and (Cu,Ni)6Sn5 at elevated temperatures

Dekui Mu, Han Huang, Stuart D. McDonald, Kazuhiro Nogita

研究成果: ジャーナルへの寄稿学術誌査読

29 被引用数 (Scopus)


Cu6Sn5 is the most common and important intermetallic compound (IMC) formed between Sn-based solders and Cu substrates during soldering. The Cu6Sn5 IMC exhibits significantly different thermomechanical properties from the solder alloys and the substrate. The progress of high-density three-dimensional (3D) electrical packaging technologies has led to increased operating temperatures, and interfacial Cu6Sn5 accounts for a larger volume fraction of the fine-pitch solder joints in these packages. Knowledge of creep and the mechanical behavior of Cu6Sn5 at elevated temperatures is therefore essential to understanding the deformation of a lead-free solder joint in service. In this work, the effects of temperature and Ni solubility on creep and mechanical properties of Cu6Sn5 were investigated using energy-dispersive x-ray spectroscopy and nanoindentation. The reduced modulus and hardness of Cu6Sn5 were found to decrease as temperature increased from 25 C to 150 C. The addition of Ni increased the reduced modulus and hardness of Cu6Sn5 and had different effects on the creep of Cu6Sn5 at room and elevated temperatures.

ジャーナルJournal of Electronic Materials
出版ステータス出版済み - 2月 2013

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学
  • 材料化学


「Creep and mechanical properties of Cu6Sn5 and (Cu,Ni)6Sn5 at elevated temperatures」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。