Mössbauer Studies of the Passive Film Formed on Tin in Borate Buffer

A. Vértes, H. Leidheiser, M. L. Varsányi, G. W. Simmons, L. Kiss

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Polarization curves of tin were determined potentiodynamically in deaerated borate buffer at pH 8.5. Mossbauer studies were carried out at liquid nitrogen temperature by transmission using foils of aluminum on which a thin layer of tin enriched in 119Sn was electrodeposited. The predominant tin species in the passive film was Sn+4. The thickness of the passive film was a function of the applied potential and ranged from 0.8 to 2.5 nm. The rate of tin dissolution in the borate buffer was insignificant even in the transpassive range. The surface product formed on tin after exposure to air for more than 30 days could not be removed cathodically in the borate buffer. In situ emission Mossbauer studies using 119mSn were largely unsuccessful because of the low specific activity of the available isotope.

Original languageEnglish
Pages (from-to)1946-1950
Number of pages5
JournalJournal of the Electrochemical Society
Volume125
Issue number12
DOIs
Publication statusPublished - Dec 1978

Keywords

  • Mössbauer spectroscopy
  • passivity
  • tin
  • tin oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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