Microstructure of electrodeposited nano-crystalline Au-Ni alloy films

Takahiro Inoue, Kazuo Sato, Tokihiko Yokoshima, Takahiro Sawaguchi, Atsushi Sugiyama, Yutaka Okinaka, Tetsuya Osaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The microstructure of electrodeposited Au-Ni films was investigated by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning transmission electron microscopy (STEM). Nano-crystalline films were found to be composed of three different phases: Au-rich crystalline phase, Ni-rich crystalline phase, and Ni-rich amorphous phase. Particles of carbon measuring 5 to 20 nm were also found in the deposit. It is assumed that the inclusion of a large amount of carbon particles causes the formation of the amorphous phase. The microstructure and the state of dispersion of the carbon particles were also investigated. The results of TEM and STEM observations showed that the carbon particles possess either the graphite structure or the amorphous structure with some of the particles being arranged in arrays. Scanning tunneling microscopy (STM) was performed to study the relationship between the structure of species adsorbed on the electrode surface and the process of carbon inclusion.

Original languageEnglish
Title of host publicationMolecular Structure of the Solid-Liquid Interface and Its Relationship to Electrodeposition 7
Pages27-34
Number of pages8
Edition37
DOIs
Publication statusPublished - 2011 Dec 1
EventMolecular Structure of the Solid - Liquid Interface and Its Relationship to Electrodeposition 7 - 218th ECS Meeting - Las Vegas, NV, United States
Duration: 2010 Oct 102010 Oct 15

Publication series

NameECS Transactions
Number37
Volume33
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceMolecular Structure of the Solid - Liquid Interface and Its Relationship to Electrodeposition 7 - 218th ECS Meeting
CountryUnited States
CityLas Vegas, NV
Period10/10/1010/10/15

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Microstructure of electrodeposited nano-crystalline Au-Ni alloy films'. Together they form a unique fingerprint.

  • Cite this

    Inoue, T., Sato, K., Yokoshima, T., Sawaguchi, T., Sugiyama, A., Okinaka, Y., & Osaka, T. (2011). Microstructure of electrodeposited nano-crystalline Au-Ni alloy films. In Molecular Structure of the Solid-Liquid Interface and Its Relationship to Electrodeposition 7 (37 ed., pp. 27-34). (ECS Transactions; Vol. 33, No. 37). https://doi.org/10.1149/1.3576073