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Surface Properties of the Sn-9Zn Alloy with the Trace Addition of Lanthanum

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Summary.

The surface properties of solders play an important role in its wettability. The poor wettability of the Sn-9Zn alloy has prohibited its commercial application. In this paper, the solid surface properties of the Sn-9Zn alloy were studied by using X-ray photoelectron spectroscopy (XPS). It was shown from the XPS analysis that zinc is highly enriched on the surface of the Sn-9Zn alloy. Although the zinc concentration on the surface is greater than 9%, lanthanum is accumulated on the surface of the Sn-9Zn-1La alloy. In addition, the analysis of the valence of tin and lanthanum indicated that tin and lanthanum could form complex oxygen-containing salts so that the anti-oxidation of the solder was enhanced, and the wettability of the solder was improved accordingly.

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Authors and Affiliations

  1. Dept. of Physical Chemistry, University of Science & Technology Beijing, 100083, Beijing, China

    Zuoan Li & Zhiyu Qiao

  2. Institute of Material Chemistry, University of Vienna, Vienna, Austria

    Adolf Mikula

Authors
  1. Zuoan Li
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  2. Adolf Mikula
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  3. Zhiyu Qiao
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Corresponding author

Correspondence to Zhiyu Qiao.

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Li, Z., Mikula, A. & Qiao, Z. Surface Properties of the Sn-9Zn Alloy with the Trace Addition of Lanthanum. Monatsh. Chem. 136, 1835–1840 (2005). https://doi.org/10.1007/s00706-005-0395-7

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  • DOI: https://doi.org/10.1007/s00706-005-0395-7

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