Corrosion-resistant Sn-Zn-based lead-free solder with high oxidation resistance

A corrosion-resistant Sn-Zn-based lead-free solder with high oxidation resistance contains Bi 1wt% to 4wt%, Zn 4wt% to 10wt%, Al 0.001 wt% to 1.0 wt%, Ge 0.001 wt% to 0.1 wt%, Ga 0.001 wt% to 0.1 wt% and the balance of Sn. The solder alloy has a melting point of 195 to 215 DEG C, and has high mechan...

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Hauptverfasser:	ZHU YUEEN, DING JIANSHE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Zusammenfassung:	A corrosion-resistant Sn-Zn-based lead-free solder with high oxidation resistance contains Bi 1wt% to 4wt%, Zn 4wt% to 10wt%, Al 0.001 wt% to 1.0 wt%, Ge 0.001 wt% to 0.1 wt%, Ga 0.001 wt% to 0.1 wt% and the balance of Sn. The solder alloy has a melting point of 195 to 215 DEG C, and has high mechanical strength, excellent creep resistance, good wettability and high corrosion resistance. In addition, the solder alloy can effectively suppress the surface oxidation of Zn, and has good manufacturability and solder joint reliability.