Estimating the gas permeability of commercial volatile corrosion inhibitors at elevated temperatures with thermo-gravimetry

Niel Pieterse, Walter W. Focke, Eino Vuorinen, Ilona Rácz

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8 Citations (Scopus)

Abstract

Volatile corrosion inhibitors (VCIs) are incorporated into packaging paper or film to protect metals against atmospheric corrosion. The vapour pressure determines the equilibrium concentration of a volatile corrosion inhibitor (VCI) in the surrounding atmosphere. However, the rate at which the VCI can be delivered across the air gap to a metal surface is determined by the gas permeability. This is the product of the vapour pressure and the diffusion coefficient: SA = PADAB. The gas permeability of commercial VCIs was estimated at elevated temperatures from vaporisation rates measured using a simple thermo-gravimetric method (TG).

Original languageEnglish
Pages (from-to)1986-1995
Number of pages10
JournalCorrosion Science
Volume48
Issue number8
DOIs
Publication statusPublished - Aug 1 2006

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Keywords

  • B. Weight loss
  • C. Atmospheric corrosion
  • C. Corrosion inhibitor

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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