Ray, Ajoy K and Kar, Abhijit and Ghosh, M (2007) Microstructural characterization of tin lead and lead free solder joint interface. In: Inter. Symp. on Advanced Materials and Processing, ISAMP-2007, 29-30 Oct. 2007, Basaveshwar Engineering College, Bagalkot..
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Abstract
Interface of Cu-(Sn37Pb) and Cu-(Sn3.5Ag0.5Cu) soldered joints has been characterized by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) fitted with EDX. TEM analysis. The presence of different intermetallic compounds (IMCs) in the interface, such as (Cu 6 Sn 5 ), (Cu 3 Sn) and Ag 3 Sn phases have been confirmed. Microstructural observations are correlated with the electrical and mechanical properties of the joints. (Lead free solder)-Cu joint exhibits better electrical conductivity (0.28x10 6 ohm-1 cm-1) and mechanical strength ~68MPa compare to the conventional (lead-tin solder)-Cu joint which exhibits electrical conductivity and mechanical strength as 0.22x10 6 ohm-1cm-1 and ~55MPa respectively.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Official URL/DOI: | http://eprints.nmlindia.org/5687 |
| Uncontrolled Keywords: | Interface, Lead free solder, TEM, electrical conductivity |
| Divisions: | Material Science and Technology |
| ID Code: | 5687 |
| Deposited By: | Dr. A K Sahu |
| Deposited On: | 04 Jul 2012 10:14 |
| Last Modified: | 04 Jul 2012 10:14 |
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