Guo-qiang Wei, Lei Wang, Xin-qiang Peng, and Ming-yang Xue, Interfacial intermetallic compound growth and shear strength of low-silver SnAgCuBiNi/Cu lead-free solder joints, Int. J. Miner. Metall. Mater., 20(2013), No. 9, pp. 883-889. https://doi.org/10.1007/s12613-013-0810-8
Cite this article as:
Guo-qiang Wei, Lei Wang, Xin-qiang Peng, and Ming-yang Xue, Interfacial intermetallic compound growth and shear strength of low-silver SnAgCuBiNi/Cu lead-free solder joints, Int. J. Miner. Metall. Mater., 20(2013), No. 9, pp. 883-889. https://doi.org/10.1007/s12613-013-0810-8
Guo-qiang Wei, Lei Wang, Xin-qiang Peng, and Ming-yang Xue, Interfacial intermetallic compound growth and shear strength of low-silver SnAgCuBiNi/Cu lead-free solder joints, Int. J. Miner. Metall. Mater., 20(2013), No. 9, pp. 883-889. https://doi.org/10.1007/s12613-013-0810-8
Citation:
Guo-qiang Wei, Lei Wang, Xin-qiang Peng, and Ming-yang Xue, Interfacial intermetallic compound growth and shear strength of low-silver SnAgCuBiNi/Cu lead-free solder joints, Int. J. Miner. Metall. Mater., 20(2013), No. 9, pp. 883-889. https://doi.org/10.1007/s12613-013-0810-8
The growth rule of the interfacial intermetallic compound (IMC) and the degradation of shear strength of Sn-0.8Ag-0.5Cu-2.0Bi-0.05Ni (SACBN)/Cu solder joints were investigated in comparison with Sn-3.0Ag-0.5Cu (SAC305)/Cu solder joints aging at 373, 403, and 438 K. The results show that (Cu1−x,Nix)6Sn5 phase forms between the SACBN solder and Cu substrate during soldering. The interfacial IMC thickens constantly with the aging time increasing, and the higher the aging temperature, the faster the IMC layer grows. Compared with the SAC305/Cu couple, the SACBN/Cu couple exhibits a lower layer growth coefficient. The activation energies of IMC growth for SACBN/Cu and SAC305/Cu couples are 111.70 and 82.35 kJ/mol, respectively. In general, the shear strength of aged solder joints declines continuously. However, SACBN/Cu solder joints exhibit a better shear strength than SAC305/Cu solder joints.
The growth rule of the interfacial intermetallic compound (IMC) and the degradation of shear strength of Sn-0.8Ag-0.5Cu-2.0Bi-0.05Ni (SACBN)/Cu solder joints were investigated in comparison with Sn-3.0Ag-0.5Cu (SAC305)/Cu solder joints aging at 373, 403, and 438 K. The results show that (Cu1−x,Nix)6Sn5 phase forms between the SACBN solder and Cu substrate during soldering. The interfacial IMC thickens constantly with the aging time increasing, and the higher the aging temperature, the faster the IMC layer grows. Compared with the SAC305/Cu couple, the SACBN/Cu couple exhibits a lower layer growth coefficient. The activation energies of IMC growth for SACBN/Cu and SAC305/Cu couples are 111.70 and 82.35 kJ/mol, respectively. In general, the shear strength of aged solder joints declines continuously. However, SACBN/Cu solder joints exhibit a better shear strength than SAC305/Cu solder joints.
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