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Evaluation of corrosion behaviour of a new class of Pb-free solder materials (Sn-In-Zn)

✍ Scribed by A. Sabbar; M. Alaoui-El Belghiti; A. Zrineh; S. El Hajjaji; A. Ben Bachir


Publisher
John Wiley and Sons
Year
2001
Tongue
German
Weight
69 KB
Volume
52
Category
Article
ISSN
0947-5117

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✦ Synopsis


In view of the need for a lead-free drop in replacement for the widely used 40Pb-60Sn near eutectic solder, new Sn-In-Zn based alloys with substantially the same melting point have been developed. The corrosion resistance and the influence of zinc content on electrochemical behaviour of some special alloys Sn-In-Zn in 3% NaCl solution has been investigated using electrochemical techniques. The good resistance of this ternary system is confirmed. In decreasing dissolution rate, they are ranked as follows: 40Pb-60Sn, Sn-10.6In-27Zn, Sn-11In-23Zn and Sn-13In-12Zn. The increase of zinc content induces a decrease of corrosion resistance of ternary Sn-In-Zn alloys. So, the Sn-In-Zn system with low indium and zinc concentrations might be a good candidate for solder materials and present a good corrosion resistance.

Angesichts der Notwendigkeit, die weitverbreitet eingesetzte, naheutektische Lo Ètlegierung 40Pb-60Sn durch eine bleifreie Legierung zu ersetzen, sind neue, auf Sn-In-Zn basierende Legierungen entwickelt worden, die in etwa den gleichen Schmelzpunkt besitzen. Der Korrosionswiderstand und der Einfluss des Zinkgehaltes auf das elektrochemische Verhalten einiger spezieller Sn-In-Zn-Legierungen wurde mittels elektrochemischer Techniken in 3% NaCl-Lo Èsung untersucht. Dabei wurde der gute Widerstand dieses terna Èren Systems besta Ètigt. Mit abnehmender


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This paper reports the results of a study on the steady-state creep parameters during phase transformation of one of the important pewters, Sn-5.2wt%In, which can be used as a new Pb-free soldering material. This pewter has been studied by tensile creep tests in the temperature range from 70 to 140