On the composition depth profile of electrodeposited Fe-Co-Ni alloys

L. Péter, A. Csík, Kálmán Vad, E. Tóth-Kádár, Áron Pekker, G. Molnár

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Depth profile of electrodeposited Fe-Co-Ni alloys was measured using secondary neutral mass spectrometry with the reverse sputtering direction. A spontaneous near-substrate composition modulation was found for each sample studied. The initial deposit is very rich in Fe, which decays due to the depletion of the electrolyte in the vicinity of the cathode surface. The near-substrate modulation pattern can be elucidated by taking into account the mutual deposition preference of the iron-group metals and the mass transport of the ions in the solution. The composition fluctuations of Fe and Co at distances larger than 100 nm from the substrate are strictly correlated. Composition fluctuations beyond the near-substrate zone are attributed to the instability of the depleted electrolyte layer in the vicinity of the cathode. A critical analysis of earlier depth profile data for electrodeposited Fe-Co-Ni samples is also given.

Original languageEnglish
Pages (from-to)4734-4741
Number of pages8
JournalElectrochimica Acta
Volume55
Issue number16
DOIs
Publication statusPublished - Jun 30 2010

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Substrates
Chemical analysis
Electrolytes
Cathodes
Modulation
Mass spectrometry
Sputtering
Mass transfer
Deposits
Iron
Metals
Ions
Direction compound

Keywords

  • Anomalous codeposition
  • Depth profile analysis
  • Electrodeposition
  • Fe-Co-Ni alloys
  • Secondary neutral mass spectrometry (SNMS)
  • Spontaneous composition modulation

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

Cite this

On the composition depth profile of electrodeposited Fe-Co-Ni alloys. / Péter, L.; Csík, A.; Vad, Kálmán; Tóth-Kádár, E.; Pekker, Áron; Molnár, G.

In: Electrochimica Acta, Vol. 55, No. 16, 30.06.2010, p. 4734-4741.

Research output: Contribution to journalArticle

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AU - Vad, Kálmán

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AU - Pekker, Áron

AU - Molnár, G.

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