UMP Institutional Repository

Effect of Multiple Reflow on IMC Formation using Various Surface Finishes

Siti Rabiatull Aisha, Idris and Ali, Ourdjini (2013) Effect of Multiple Reflow on IMC Formation using Various Surface Finishes. International Journal of Microstructure and Materials Properties, 7 (6). pp. 502-516. ISSN 1741-8410 (print); 1741-8429 (online)

[img] PDF (fkm-2013-aisha-EffectOfMultiple)
fkm-2013-aisha-EffectOfMultiple.pdf - Accepted Version
Restricted to Repository staff only

Download (2MB) | Request a copy

Abstract

In this paper, the results of a study on the effect of multiple reflow on the mechanism of intermetallic compounds (IMCs) formation of solder joints made from lead–free Sn–4Ag–0.5Cu (SAC405) on electroless nickel/electroless palladium/immersion gold (ENEPIG), electroless nickel/immersion gold (ENIG), immersion silver (ImAg) and copper surface finishes are presented. After the first reflow soldering, the well–known intermetallic Cu6Sn5 was observed in ImAg and Copper of surface finishes. While for ENEPIG and ENIG, mainly, (Ni,Cu)3Sn4 and (Cu,Ni)6Sn5 was formed respectively. By increasing the number of reflows up to three, the thickness of intermetallics increased gradually and their grain sizes coarsened. The intermetallics growth kinetics showed that the interfacial phase Cu6Sn5, (Ni,Cu)3Sn4 and (Cu,Ni)6Sn5 was controlled mainly by grain boundary diffusion and that the intermetallic growth on ENEPIG was found to be slowest among other surface finishes being used.

Item Type: Article
Additional Information: Indexed in Scopus
Uncontrolled Keywords: Multiple reflow; Intermetallic compounds; IMC; Surface finish; Solder joints; Reflow soldering; Thickness; Grain size
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Dr. Siti Rabiatull Aisha Idris
Date Deposited: 07 Apr 2014 07:56
Last Modified: 15 Jan 2018 07:53
URI: http://umpir.ump.edu.my/id/eprint/5208
Download Statistic: View Download Statistics

Actions (login required)

View Item View Item