Wetting behavior and evolution of microstructure of Sn-3.5Ag solder alloy on electroplated 304 stainless steel substrates

Nayak, Vignesh U., Prabhu, K.N., Stanford, Nicole and Satyanarayan, 2012, Wetting behavior and evolution of microstructure of Sn-3.5Ag solder alloy on electroplated 304 stainless steel substrates, Transactions of the Indian Institute of Metals, vol. 65, no. 6, pp. 713-717.

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Title Wetting behavior and evolution of microstructure of Sn-3.5Ag solder alloy on electroplated 304 stainless steel substrates
Author(s) Nayak, Vignesh U.
Prabhu, K.N.
Stanford, Nicole
Satyanarayan,
Journal name Transactions of the Indian Institute of Metals
Volume number 65
Issue number 6
Start page 713
End page 717
Total pages 5
Publisher Springer
Place of publication Berlin, Germany
Publication date 2012-12
ISSN 0972-2815
Keyword(s) IMCs
lead free solder
reactive wetting
stainless steel
Summary In the present study, wetting characteristics and evolution of microstructure of Sn–3.5Ag solder on Ag/Ni and Ni electroplated 304 stainless steel (304SS) substrates have been investigated. Solder alloy spread on Ag/Ni plated 304SS substrates exhibited better wetting as compared to Ni/304SS substrate. The formations of irregular shaped and coarser IMCs were found at the interface of solder/Ni/304SS substrate region whereas, solder/Ag/Ni/substrate interface showed continuous scallop and needle shaped IMCs. The precipitation of Ag3Sn, Ni–Sn, FeSn2 and lesser percentage of Fe–Cr–Sn IMCs were found at the interface of solder/Ag/Ni/substrate region whereas, solder/Ni/304 SS substrate exhibited predominantly FeSn2 and Fe–Cr–Sn IMCs. Presence of higher amount of Fe–Cr–Sn IMCs at the solder/Ni/304SS substrate interface inhibited the further wetting of solder alloy.
Language eng
Field of Research 109999 Technology not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30051191

Document type: Journal Article
Collection: Institute for Frontier Materials
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