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Microstructural change and hardness of lead free solder alloys

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2 Author(s)
Y. Miyazawa ; Dept. of Metall. Eng., Tokai Univ., Kanagawa, Japan ; T. Ariga

Two types of Pb free solder, Sn-Ag eutectic alloy and Sn-Zn eutectic alloy, as potential replacements for Sn-Pb eutectic solder and Sn-Pb eutectic alloy were found to age-soften during storage at room temperature (25 C, 298 K, 77 F) and high temperature (100 C, 373 K 212 F). The hardness of another type of Pb free solder, Sn-Bi eutectic alloy, did not change during storage at room and high temperature. However, the microstructure of Sn-Bi eutectic alloy coarsened unusually during storage at room and high temperature.

Published in:

Environmentally Conscious Design and Inverse Manufacturing, 1999. Proceedings. EcoDesign '99: First International Symposium On

Date of Conference:

3-3 Feb. 1999