Structure and texture of electrochemically prepared nickel layers with co-deposited zirconia nanoparticles

Author(s)

Paul Angerer, Helena Simunkova, Erhard Schafler, Michael B Kerber, Jaroslaw Wosik, Gerhard E. Nauer

Abstract

Nickel layers with incorporated zirconia particles of 5 nm crystallite size with a thickness between 5 and 80 ?m were deposited electrochemically on rolled steel substrates. An aqueous electrolyte solution containing nickel sulphate, nickel chloride, and boric acid (Watts bath) was used for the deposition process. The crystallite size distribution, the microstructure, and the texture of the samples were investigated by means of X-ray diffraction methods. The analysis of peak width data has shown that with increasing layer thickness the surface region of the layers which is penetrated by the radiation up to a depth of several ?m exhibits a continuous growth in the crystallite size. Corresponding investigations by scanning electron microscopy of the cross-sections of the layers support this observation. Furthermore, the addition of zirconia particles results in a reduced crystallite size. Pole figure determinations of the nickel Bragg reflections (1 1 1), (2 0 0), and (3 1 1) revealed the presence of a fibre texture parallel to the [1 0 0] lattice direction. The prominence of the texture of the surface region rises with increasing layer thickness. The formation of the texture is strongly reduced by the co-deposition of the zirconia particles.

Organisation(s)

Physics of Nanostructured Materials

External organisation(s)

Kompetenzzentrum für elektrochemische Oberflächentechnologie GmbH

Journal

Surface and Coatings Technology

Volume

203

Pages

1438-1443

No. of pages

6

ISSN

0257-8972

DOI

https://doi.org/10.1016/j.surfcoat.2008.11.011

Publication date

2009

Peer reviewed

Yes

Austrian Fields of Science 2012

104017 Physical chemistry, 104011 Materials chemistry

Portal url

https://ucrisportal.univie.ac.at/en/publications/ccf648f6-981e-4554-a20c-9d998d28d6c0