Journal article

Publication year: 2014

Pages: 80-86

Journal: Solid State Ionics

Volume number: 263

ISSN: 0167-2738

eISSN: 1872-7689

DOI Link: https://doi.org/10.1016/j.ssi.2014.05.006

Publisher: Elsevier

Abstract: 
Palladium and silver films with different microstructures were prepared on (111), (110), (100) and (311) orientated YSZ (yttrium stabilised zirconia) substrates. Subsequently, the as-prepared films were anodically polarised at 400 degrees C or only annealed at the polarisation temperature. As results of the annealing and polarisation, we observed i) oxidation of the palladium films, ii) grain growth in the case of silver films on (111) orientated YSZ and iii) de-wetting in the case of silver films on the other YSZ substrates. The comparison of the annealing and polarisation results revealed a modification of the oxidation process of palladium and a significant increase of de-wetting of silver films. Additionally, we observed different indications that the oxygen built-out occurred notably at grain boundaries within the metal films. These indications were: an increased polarisation resistance due to a decrease of suitable grain boundaries by oxidPd and Ag films on differently orientated YSZ (yttrium stabilised zirconia) were anodically polarised at 400 degrees C or only annealed at this temperature. We observed i) oxidation of the palladium films, ii) grain growth of silver films on (111) orientated YSZ and iii) de-wetting of silver films on the other orientated YSZ substrates. The comparison of the annealing and polarisation results revealed a modification of the oxidation process of palladium and a significant increase of de-wetting of silver films. Additionally, we observed different indications that the oxygen built-out occurred notably at grain boundaries within the metal films. (C) 2014 Elsevier B.V. All rights reserved.

Harvard Citation style: Beck, G. and Bachmann, C. (2014) Microstructural changes due to anodic polarisation of palladium and silver films on YSZ, Solid State Ionics, 263, pp. 80-86. https://doi.org/10.1016/j.ssi.2014.05.006

APA Citation style: Beck, G., & Bachmann, C. (2014). Microstructural changes due to anodic polarisation of palladium and silver films on YSZ. Solid State Ionics. 263, 80-86. https://doi.org/10.1016/j.ssi.2014.05.006