Study on the preparation and properties of Sn-0.7Cu-Bi alloy.

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College of Materials Science and Engineering, Kunming University of Science and Technology 121 Street, Wenchang Road 68 Kunming 650093 China

Published: November 2023


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Article Abstract

This study investigated the impact of different bismuth (Bi) contents on the mechanical properties, melting point, and corrosion resistance of tin-copper (Sn-Cu) series alloys (Sn-0.7Cu). Furthermore, Sn-0.7Cu-Bi alloys with different Bi contents ( = 0, 3, 6, 9, 12, 15 wt%) were prepared through a traditional casting process. The composition and microstructure of the alloy were characterized X-ray diffraction (XRD) and Scanning electron microscopy (SEM). The impact of Bi on the mechanical properties, melting point, and corrosion resistance of Sn-0.7Cu alloy was analyzed, reaching a peak at 12 wt% Bi. Furthermore, beyond this concentration, the mechanical properties of the alloy exhibited a decline. The corrosion resistance of Sn-0.7Cu-Bi alloys increased with increasing Bi content. However, when the Bi content was >12 wt%, owing to the aggregation of Bi in the alloy, the corrosion resistance of the alloy decreased.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10694794PMC
http://dx.doi.org/10.1039/d3ra06742dDOI Listing

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