Influence of the palladium coating on the hydrogen embrittlement of Ni61Nb33Zr6 amorphous tapes obtained by melt spinning

Influence of the palladium coating on the hydrogen embrittlement of Ni61Nb33Zr6 amorphous tapes obtained by melt spinning

Gyorgy THALMAIER, Ioan VIDA-SIMITI, Niculina Argentina SECHEL

Abstract. The current work is focused towards the properties of Ni61Nb33Zr6 amorphous alloy for use in hydrogen-related energy applications. The master alloys were prepared by arc melting using high purity metals in a Ti-gettered argon atmosphere. The alloys were melted several times to improve homogeneity. The ingots were induction-melted under a argon atmosphere in a quartz tube and a graphite crucible, injected through a nozzle onto a Cu wheel to produce rapidly solidified amorphous ribbons. The characterization of the amorphous ribbons was done by X-ray diffraction, DSC analysis and hardness tests. The hydrogen charging was done electrochemically for low temperature tests and by heating in a hydrogen atmosphere at different temperatures in the case of the high temperature tests. It was found that the palladium plating reduces the hydrogen embrittlement limit by 50 ℃.

Keywords
Amorphous alloys; Hydrogenation; Embrittlement, Palladium coating

Published online 11/5/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Gyorgy THALMAIER, Ioan VIDA-SIMITI, Niculina Argentina SECHEL, ‘Influence of the palladium coating on the hydrogen embrittlement of Ni61Nb33Zr6 amorphous tapes obtained by melt spinning’, Materials Research Proceedings, Vol. 8, pp 89-94, 2018

DOI: http://dx.doi.org/10.21741/9781945291999-10

The article was published as article 10 of the book Powder Metallurgy and Advanced Materials

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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