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Effect of Antimony Additions on Corrosion and Mechanical Properties of Sn-Bi Eutectic Lead-Free Solder Alloy
Instituto de Metalurgia-UASLP, San Luis Potosí, México
Instituto de Metalurgia-UASLP, San Luis Potosí, México
Instituto de Metalurgia-UASLP, San Luis Potosí, México
- 1 Instituto de Metalurgia-UASLP, San Luis Potosí, México
- 2 Instituto de Metalurgia-UASLP, San Luis Potosí, México
- 3 Instituto de Metalurgia-UASLP, San Luis Potosí, México
Materials Sciences and Applications·Volume 03 (2012)·Pages 355–362·Published 18 June 2012·DOI10.4236/msa.2012.36051
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Abstract
The goal of the present work is to investigate the effects of the addition of Sb (0, 3 and 6 wt%) on structure, melting, corrosion and mechanical properties of Sn-Bi eutectic solder alloys. The mechanical properties of the bulk Sn-Bi-Sb solders were higher as the amount of antimony increases, making compressive strength augment from 65 MPa to 100 MPa when 6 wt% Sb was incorporated to the Sn-Bi eutectic alloy. The three alloys presented a melting temperature that is smaller to the one exhibited by the eutectic alloy Sn-38Pb (T m = 183°C). According to the electrochemical results, the addition of higher contents of Sb to the Sn-Bi eutectic alloy had a positive effect: it ennobled the E corr values.
KeywordsLead Free Solder AlloysSn-Bi-SbMechanical PropertiesCorrosion Properties
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