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https://hdl.handle.net/1822/53434
Título: | Wetting behaviour of SAC305 solder on different substrates in high vacuum and inert atmospheres |
Autor(es): | Soares, Delfim Gonçalves, Cristina Isabel Batista Leitão, H Lau, C.S. Teixeira, J. Carlos Ribas, José Luis Teixeira, S. F. C. F. Cerqueira, M. F. Macedo, Francisco |
Data: | 2015 |
Editora: | Springer |
Revista: | Journal of Materials Science: Materials in Electronics |
Citação: | C. Gonçalves, H. Leitão, J. C. Teixeira, L. Ribas, S. Teixeira, M. F. Cerqueira, F. Macedo, D. Soares (2015) Wetting behaviour of SAC305 solder on different substrates in high vacuum and inert atmospheres, Journal of Materials Science: Materials in Electronics, DOI: http://link.springer.com/article/10.1007/s10854-015-3037-9 |
Resumo(s): | The wettability between solder and substrate is a very important issue in reliability of soldering process. The contact angle h is used to measure the degree of wetting. The contact angle of lead-free alloy Sn-3 % Ag-0.5 % Cu (wt%) was measured, as a function of temperature, for three different commercial surface finish substrates used in printed circuit boards (PCB): Sn, NiAu and Organic Solderability Preservative (OSP). The measurements were performed by the sessile drop method in two different atmospheres: high vacuum and inert gas. In high vacuum the results showed that on substrates of NiAu and OSP the solder started spreading suddenly at 225 C and in Sn substrate the contact angle decreases slightly with temperature. In inert gas atmosphere the results showed different behaviours: the contact angle between molten solder in OSP and NiAu substrates is sensitive to temperature; and, in Sn substrate, the contact angle does not change with temperature. The NiAu and OSP substrates showed a better degree of wettability than Sn substrate, in inert atmosphere. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/53434 |
DOI: | 10.1007/s10854-015-3037-9 |
ISSN: | 0957-4522 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CAlg - Artigos em revistas internacionais / Papers in international journals DEM - Artigos em revistas de circulação internacional com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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art_3A10.1007_2Fs10854-015-3037-9.pdf Acesso restrito! | 640,95 kB | Adobe PDF | Ver/Abrir |