PDF

Sensing electrochemical activity in polymer coated metals during the early stages of coating degradation–Effect of the polarization of the substrate

R.M. Souto, J.J. Santana

2011eselectrochemicalcoatingdegradationcorrosionhydrogen peroxide

Abstract

Language:

This study explores the limitations of scanning electrochemical microscopy (SECM) in monitoring electrochemical activity near defects in polymer coatings used to protect metals from corrosive environments. It addresses potential chemical interferences during corrosion reactions that could affect the faradaic signals recorded at the SECM tip. The experiment involved applying both positive and negative polarization to the substrate relative to its corrosion potential in an aqueous solution to distinguish the contributions of half-cell processes. The analysis of signals detected at the SECM tip allowed for the monitoring of local concentrations of Fe(II) ions, hydrogen peroxide, and oxygen. Notably, the observed oxygen reduction reaction at cathodic sites on the corroding steel surface produced hydrogen peroxide as an intermediate, which complicates the accurate detection of dissolved metal ions at the tip. These findings highlight the importance of considering the dynamics between different electrochemical species during the investigation of coating performance under corrosion conditions.

Download

Cite This Work

@article{348ded2b-8877-4b10-babd-2ffecd63e9a7,
  title={Sensing electrochemical activity in polymer coated metals during the early stages of coating degradation–Effect of the polarization of the substrate},
  author={R.M. Souto and J.J. Santana},
  year={2011},
  language={es}
}
TY  - JOUR
TI  - Sensing electrochemical activity in polymer coated metals during the early stages of coating degradation–Effect of the polarization of the substrate
AU  - R.M. Souto
AU  - J.J. Santana
PY  - 2011
LA  - es
ER  -

Similar Items

The Electrochemical Processing of Refractory Metals

Donald R. Sadoway

This article discusses the electrochemical processing methods employed for the extraction and recycling of refractory metals, focusing primarily on no

2026enPDF

Refractory Metals and Alloys , in Springer Handbook of Condensed Matter and Materials Data, Chapter 1.9

2026enPDF

EFFECT OF HEAT TREATMENT ON CORROSION BEHAVIOR OF SS316

MOHD ASYRAF BIN CHE AZMI

This study investigates the effect of heat treatment on the corrosion behavior of SS316 stainless steel in a simulated body environment. The objective

2009EnglishPDF

Materials for Nuclear Plants

W. Hoffelner

Structural materials must be able to operate under demanding exposure conditions, particularly for advanced nuclear plants where challenges arise from

2013enPDF

THE FUTURE OF ELECTRONIC WASTE RECYCLING IN THE UNITED STATES: Obstacles and Domestic Solutions

Jennifer Namias, Dr. Nickolas J. Themelis

This study explores the future of electronic waste recycling in the United States, addressing the challenges and proposing domestic solutions. The rap

2013enPDF

Extractive Metallurgy 1

Alain Vignes

This book provides a comprehensive overview of the fundamental principles of extractive metallurgy, with a specific focus on basic thermodynamics and

2011enPDF