Annealing effect and tensile interface fracture mechanism of pure silver bonding wires

Hao Wen Hsueh, Fei Yi Hung, Truan Sheng Lui, Li Hui Chen

研究成果: Conference contribution

摘要

Since Ag wires have similar hardness and bonding properties to Au wires, they can be applied in some pads. In the present study, the annealing effect (at 225°C-275°C for 30min) on the tensile mechanical properties of silver wires wih φ=23μm was investigated. In addition, the microstructural characteristics and the mechanical properties before and after an electric flame-off (EFO) process were also studied. Experimental results indicate that with annealing temperatures of more than 250°C, the silver wires possessed a fully annealed structure, the tensile strength and the hardness decreased, and the elongation was raised significantly. Under fte thermal effect of EFO, the necks of the Ag balls underwent recrystallization and grain growth was induced, and the annealed Ag wires had a shorter zone of HAZ (220μm). The bonding strength and the neck-strength of the Ag wires were more than 7gf and possessed excellent bonding properties.

原文English
主出版物標題Extraction and Processing Division - 2012 EPD Congress - Held During the TMS 2012 Annual Meeting and Exhibition
頁面145-152
頁數8
出版狀態Published - 2012 五月 15
事件2012 EPD Congress - TMS 2012 Annual Meeting and Exhibition - Orlando, FL, United States
持續時間: 2012 三月 112012 三月 15

出版系列

名字TMS Annual Meeting

Other

Other2012 EPD Congress - TMS 2012 Annual Meeting and Exhibition
國家United States
城市Orlando, FL
期間12-03-1112-03-15

    指紋

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

引用此

Hsueh, H. W., Hung, F. Y., Lui, T. S., & Chen, L. H. (2012). Annealing effect and tensile interface fracture mechanism of pure silver bonding wires. 於 Extraction and Processing Division - 2012 EPD Congress - Held During the TMS 2012 Annual Meeting and Exhibition (頁 145-152). (TMS Annual Meeting).