Effects of tin particles addition on structural and mechanical properties of eutectic Sn–58Bi solder joint

• Main Authors: Bashir, M. Nasir, Saad, Hafiz Muhammad, Muhammad, Rizwan, Quazi, Moinuddin Mohammed, Ali, Muhammad Mahmood, Ahmed, Arslan E.M., Zaidi, Asad Ali, Soudagar, Manzoore Elahi M., Haseeb, Abdul S.Md Abdul, Naher, Sumsun
• Format: Article
• Language: English; English
• Published: Springer 2022
• Subjects: T Technology (General); TA Engineering (General). Civil engineering (General); TJ Mechanical engineering and machinery; TL Motor vehicles. Aeronautics. Astronautics
• Online Access: http://umpir.ump.edu.my/id/eprint/40187/1/Effects%20of%20tin%20particles%20addition%20on%20structural%20and%20mechanical.pdf; http://umpir.ump.edu.my/id/eprint/40187/2/Effects%20of%20tin%20particles%20addition%20on%20structural%20and%20mechanical%20properties%20of%20eutectic%20Sn%E2%80%9358Bi%20solder%20joint_ABS.pdf; http://umpir.ump.edu.my/id/eprint/40187/; https://doi.org/10.1007/s10854-022-09028-5; https://doi.org/10.1007/s10854-022-09028-5

Due to the inherent environmental and health toxicities associated with lead, the use of environmental friendly lead-free solder materials has become an unavoidable trend in the electronic packaging industry. Sn-58Bi alloy is gaining attention for its good material properties such as low melting point, reliability and high tensile strength. The presence of the bismuth-rich phase increases the brittleness of Sn-58Bi alloy. The purpose of this study is to suppress the brittleness of Sn-58Bi alloy by the addition of different wt% (0, 10, 20, 30) of Sn powder. The powder metallurgy method was used to prepare the samples. Scanning electron microscopy and energy-dispersive X-ray analysis were done to study the structural properties and a tensile test was done by a universal tensile machine to study the mechanical properties. The results reveal that the Sn particles partially dissolved in the Sn-58Bi solder matrix. The dissolution of Sn particles significantly improved the mechanical strength by 30%, suppressed the brittleness and improved the strain value by 1.3 times.