Akademik Veri Yönetim Sistemi
Intermetallics, cilt.195, 2026 (SCI-Expanded, Scopus)
In this study, the structural, thermal, electrical, mechanical and corrosion properties of Zn-2Cu-1.5Bi-xSn (x = 3, 5, 7 wt%) alloys were investigated. Microstructural analyses using SEM and EDX revealed a Zn-rich matrix with dispersed β-Sn and Bi phases. At the same time, XRD examinations additionally identified the presence of the CuZn5 intermetallic phase. Differential Scanning Calorimetry (DSC) analyses showed that increasing Sn content decreased both the solidification and melting temperatures of the alloys, indicating a stabilizing effect of Sn on the phase transformation behavior. The electrical conductivity of the alloys did not change significantly with Sn addition; however, a noticeable increase in temperature sensitivity was observed. Microhardness and tensile strength values decreased with increasing Sn content. Corrosion tests were conducted in a 3.5 wt% NaCl solution and showed that the best corrosion resistance was achieved in the alloy with 5 wt% Sn, while higher Sn levels led to increased corrosion rates and a greater risk of localized corrosion. Overall, the results indicate that environmentally friendly Zn-Cu-Bi-Sn (ZCB-xSn) alloys exhibit a balanced combination of mechanical, thermal and corrosion properties relevant to bearing applications. In particular, the ZCB-5Sn composition showed the most favorable corrosion behavior, indicating its potential for plain bearing applications under low-to medium-load conditions.