| Full text | |
| Author(s): |
Septimio, Rudimylla
[1]
;
Cruz, Clarissa
[2]
;
Silva, Bismarck
[3]
;
Garcia, Amauri
[4]
;
Spinelli, Jose Eduardo
[5]
;
Cheung, Noe
[4]
Total Authors: 6
|
| Affiliation: | [1] Fed Univ South & Southeast Para Unifesspa, Inst Geosci & Engn, BR-68500080 Maraba, Para - Brazil
[2] Fed Univ Ouro Preto UFOP, Inst Exact & Appl Sci, Dept Prod Engn, BR-35931008 Joao Monlevade, MG - Brazil
[3] Fed Univ Rio Grande do Norte UFRN, Dept Mat Engn, BR-59078970 Natal, RN - Brazil
[4] Univ Estadual Campinas, Dept Mfg & Mat Engn, UNICAMP, BR-13083860 Campinas, SP - Brazil
[5] Fed Univ Sao Carlos UFSCar, Dept Mat Engn, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Journal of Applied Electrochemistry; v. 51, n. 5, p. 769-780, MAY 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
In electronic devices the solder joint is exposed not only to the air but also to moistures and other corrosive media such as chlorine and sulfur compounds. Bi-Ag alloys meet the melting temperature requirement to be classified as high-temperature solders, therefore, knowledge of corrosion behavior is important for a long-term reliability of Bi-Ag solder connections. However, corrosion studies of Bi-Ag alloys are quite restricted in the literature. In this study, the role of the representative length scale of the microstructure as well as of the effects of Ag segregation on the resulting corrosion behavior of Bi-4 wt% Ag alloy samples are investigated. Cyclic potentiodynamic polarization and electrochemical impedance spectroscopy measurements were performed, and an equivalent circuit was also proposed to simulate the electrochemical corrosion behavior. All the used techniques indicated a tendency of better corrosion resistance associated with the sample having coarser microstructure and less Ag content. {[}GRAPHICS] . (AU) | |
| FAPESP's process: | 17/12741-6 - Application of experimental solidification techniques, characterization of microstructure and properties in the evaluation of eutectic and hypereutectic Al-base and Zn-base alloys |
| Grantee: | José Eduardo Spinelli |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 19/23673-7 - Evaluation of alloys for thermal interface contact and for additive manufacturing |
| Grantee: | José Eduardo Spinelli |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/15158-0 - Characterization of microstructure and properties in the evaluation of alloys for thermal interface contact |
| Grantee: | Amauri Garcia |
| Support Opportunities: | Regular Research Grants |