Investigation on the Solidification and Phase Transformation in Pb-Free Solders Using In Situ Synchrotron Radiography and Diffraction:A Review

• 作者: Guang Zeng Shiqian Liu Qinfen Gu Zebang Zheng Hideyuki Yasuda Stuart D.McDonald Kazuhiro Nogita
• 来源期刊: 金属学报（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Special Issue: Application of Synchrotron Radiation in Materials Research
• 页码范围: 49-66
• 页数: 18页
• 语种: 英文

摘要

It is widely accepted that further development of Pb-free solder alloys for improved processing and in-service properties of next-generation electronics,can be accelerated through a fundamental understanding of phase transformation and micro-structure control in Pb-free solder joints.Advanced characterization techniques including synchrotron radiation provide a comprehensive toolset to measure the composition,crystallography,morphology,and properties of the major components of solder alloys.The research using such techniques is reviewed in detail including the characterization of the effects of micro-alloy additions on the microstructure and properties of Pb-free solder joints,especially those on the intermetallic phases.The discoveries outlined are of scientific and industrial relevance and have implications for new solder alloy composition design and the reliability of lead-free solder joints.