Home Kovove Materialy-Metallic Materials 2014 Metallic Materials Vol. 52 (2014), no. 3, pp.157-162

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Metallic Materials Vol. 52 (2014), no. 3, pp.157-162

Title: Microstructure and aging resistance of the joints between SAC305 solder and thermoelectric materials with different diffusion barriers
Author: F. J. HENG, Z. L. MA, Y. WANG, G. X. ZHANG, W. M. LONG

Abstract: The microstructure and aging resistance of SAC305 soldering joints with different diffusion barriers in thermoelectric application were investigated in this paper. Results indicate that the SACPNi joints (SAC305 solder and p-type (Bi,Sb)2Te3 thermoelectric materials with Ni diffusion barrier) exhibit more defects when increasing the aging temperature and time. However, there were less defects observed in the SACPSB joints (SAC305 solder and p-type (Bi,Sb)2Te3 thermoelectric materials with Sn-58Bi alloy diffusion barrier) when aging temperature and time increased. This result indicated that, for p-type (Bi,Sb)2Te3 thermoelectric materials, the diffusion barrier of hot-dipping Sn-58Bi alloy was more preferable than electroless plating nickel in the application of joining p-type thermoelectric materials and the Cu substrates with SAC305 solder.

Keywords: thermoelectric materials, soldering joints, aging resistance
Year: 2014, Volume: 52, Issue: 3 Page From: 157, Page To: 162

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