|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Emerging Interconnect and Pb-free Materials for Advanced Packaging Technology
||Quantifying the Role of Stress in Whisker Nucleation and Growth
||Eric Chason, Fei Pei, Justin Vasquez, Andrew Hitt
|On-Site Speaker (Planned)
Although Sn whiskers have been studied extensively, there is still controversy about what are the driving forces for whisker nucleation and growth. Many studies point to the role of stress, but confirming this requires a quantitative comparison between controlled stress and the resulting whisker evolution. We describe the results of recent studies in which we use applied stress (via thermal cycling or mechanical pressure) to induce whisker nucleation and growth. The measurements are interpreted in terms of phenomenological equations that try to relate the observed behavior to underlying kinetic mechanisms. Studies will be described that determine how stress decreases the barrier for whisker nucleation at different temperatures and strain rates. We will also show results in which mechanical pressure drives the growth of whiskers.
||Planned: Supplemental Proceedings volume