A Modified Chemical Imaging Sensor System for Real-Time pH Imaging of Accelerated Crevice Corrosion of Stainless Steel

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3 Citations (Scopus)

Abstract

The measurement system of a chemical imaging sensor is combined with the circuitry for polarization of a metal test piece. The surface of the metal test piece is brought into contact with the sensor surface forming a crevice of about 12 µm width. The course of initiation and propagation of corrosion are observed as serial images of pH in the crevice. A local change of the pH value down to 2 is observed in synchronization with the change of the anodic current.

Original languageEnglish
Article number1700963
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume215
Issue number15
DOIs
Publication statusPublished - 2018 Aug 8

Keywords

  • chemical imaging sensors
  • crevice corrosion
  • pH images
  • stainless steel

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

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