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[Untitled]

Authors :
Ernő Kuzmann
M. El-Sharif
C. U. Chisholm
A. Vértes
I. W. Brooke
Source :
Journal of Radioanalytical and Nuclear Chemistry. 246:137-141
Publication Year :
2000
Publisher :
Springer Science and Business Media LLC, 2000.

Abstract

119Sn conversion electron Mossbauer spectroscopy, X-ray diffractometry and energy dispersive X-ray analysis (EDAX) were employed to investigate microstructure, composition and phases present in as-electroplated Sn-Cr and Sn-Cr-Zn alloys deposited on copper substrates. In the Sn-Cr deposits Cu, β-Sn, Cr-Sn phases can be identified by X-ray diffractometry. The phase composition is significantly different between the samples prepared with relatively higher and lower current densities. In the diffractograms of Sn-Cr-Zn deposits Cu, β-Sn, Zn phases can be well identified. A small intensity amorphous peak is also present, which can perhaps be associated with the presence of some amorphous Zn and Sn alloy. 119Sn Mossbauer spectra of Sn-Cr deposits exhibit an asymmetric broad main line centered near the isomer shift characteristic of β-Sn as well as they contain a small component near the zero velocity which can be attributed to a SnO2 phase based upon its characteristic. 119Sn Mossbauer spectra of Sn-Cr-Zn deposits are roughly similar to those of Sn-Cr deposits although the Mossbauer parameters of the third phase are different and vary with the Zn content. The presence of SnO2 on the surface mainly in the Sn-Cr samples can be attributed to the corrosion process in the air.

Details

ISSN :
02365731
Volume :
246
Database :
OpenAIRE
Journal :
Journal of Radioanalytical and Nuclear Chemistry
Accession number :
edsair.doi...........bd9cb923c542ee7e0402d8175608f1d8
Full Text :
https://doi.org/10.1023/a:1006766005674