Paper Title:
Micro Impact Testing of Lead Free Solder Joints
  Abstract

This paper presents data obtained from a newly-developed instrument to test the quality of solder interconnections at high strain rate – the ‘micro-impactor’. This shear test of the interconnection at high strain rate mimics the stress experienced by the solder joint when undergoing shock due to drop-impact. Instrumented with a load cell and linear variable displacement transducer (LVDT), it also has the ability to provide dynamic impact force and displacement data. Earlier concepts to characterise the solder joint at high strain rates such as the miniature pendulum impact tester [1] lacked this capability. This micro-impactor was used to study the effect of increasing silver (Ag) and copper (Cu) concentration in solder alloys on the shear strength of the solder joint. The performance of these lead-free alloys was also compared to that of the well-established leaded solder. It was found that increasing the silver content increases the yield strength of the solder, causing the failure to occur at the brittle intermetallic layer instead of in the bulk of the solder.

  Info
Periodical
Edited by
John Bell, Cheng Yan, Lin Ye and Liangchi Zhang
Pages
99-102
DOI
10.4028/www.scientific.net/AMR.32.99
Citation
R. Rajoo, E. H. Kisi, D.J. O'Connor, "Micro Impact Testing of Lead Free Solder Joints", Advanced Materials Research, Vol 32, pp. 99-102, Feb. 2008
Online since
February 2008
Price
US$ 28,-
Share
Authors: Jong Woong Kim, Sun Kyu Park, Seung Boo Jung
Abstract:Ball shear test was investigated in terms of effects of important test parameters, i.e. shear height and shear speed, with an experimental...
851
Authors: Rimma Lapovok
Abstract:Equal Channel Angular Extrusion (ECAE) has become a very popular tool for studying the evolution of microstructure and properties under...
37
Authors: De Liang Ren, Fu Ren Xiao, P. Tian, X. Wang, L.Y. Zhang, Bo Liao
Abstract:With the development of high toughness pipeline, it is necessary to develop new welding wires for high-efficiency submerged-arc welding, to...
385
Authors: Qiang Shen, Chang Lian Chen, Fei Chen, Qi Wen Liu, Lian Meng Zhang
Abstract:Porous calcia stabilized zirconia ceramics (CSZC) with closed pores were presurelessly sintered by adding different contents of zirconia...
435
Authors: Hui Hui Zhao, Wen Fang Zhang
Chapter 3: Civil Engineering
Abstract:The application of ABAQUS finite element software non-linear finite element analysis of brick masonry walls with structural column. Build...
791