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Journal of Coatings Technology and Research
Published in: Journal of Coatings Technology and Research 6/2010

01-11-2010

In situ XRD characterization of hydrogen desorption from electrochemically deposited Pd coating

Authors: L. Borgese, P. Zanola, E. Bontempi, D. Rossi, L. E. Depero

Published in: Journal of Coatings Technology and Research | Issue 6/2010

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Abstract

One of the main problems in electrochemical Pd deposition of coatings is the hydrogen desorption that causes microcracking phenomena. With the aim of understanding the structural changes due to the hydrogen desorption, the kinetics of the phase transformation from hydride to metallic structure has been followed by in situ X-ray diffraction (XRD) experiments. The structural evolution of samples obtained by two different electrochemical baths has been compared. It was found that the solubility and the desorption kinetics of hydrogen are significantly influenced by the presence of structural defects. Residual stresses have been evaluated for both samples by means of 2D X-ray diffraction (XRD2). The presence of amine complexes in the bath seems to contribute to reducing the crystalline dimension of the Pd-phase, and the differences between the specific volumes of α and β phases is reduced for nanostructured coatings.
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Metadata
Title
In situ XRD characterization of hydrogen desorption from electrochemically deposited Pd coating
Authors
L. Borgese
P. Zanola
E. Bontempi
D. Rossi
L. E. Depero
Publication date
01-11-2010
Publisher
Springer US
Published in
Journal of Coatings Technology and Research / Issue 6/2010
Print ISSN: 1547-0091
Electronic ISSN: 1935-3804
DOI
https://doi.org/10.1007/s11998-010-9253-6

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