Tin Whiskers of Bulk Solders Generated Under Resonance

In this study, we investigated the vibration properties of Sn–Zn and Sn–Zn–Al alloys. It is notable that, with a small amount of Al addition, Sn whiskers were generated during resonant vibration. This may be the first time that Sn whiskers were found on bulk materials. Microstructural refining and h...

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Bibliographic Details
Published in:Journal of materials research 2005-06, Vol.20 (6), p.1385-1388
Main Authors: Song, Jenn-Ming, Lui, Truan-Sheng, Chang, Yea-Luen, Chen, Li-Hui
Format: Article
Language:English
Subjects:
Alloy
Mechanical properties
Microstructure
Rapid Communications
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Summary:In this study, we investigated the vibration properties of Sn–Zn and Sn–Zn–Al alloys. It is notable that, with a small amount of Al addition, Sn whiskers were generated during resonant vibration. This may be the first time that Sn whiskers were found on bulk materials. Microstructural refining and hardening caused by alloying of Al stunted the fiberous type Sn deformation within Sn–Zn eutectics. Vibration-induced extrusion of Zn-free regions in the vicinity of cell boundaries may account for the appearance of the whiskers.
ISSN:0884-2914
2044-5326
DOI:10.1557/JMR.2005.0195