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Title: Electrode design for corrosion monitoring using electrochemical noise measurements

Abstract

An electrode design is provided for corrosion monitoring using electrochemical noise measurements. Electrochemical probes are used for sensing electrochemical noise voltage values and electrochemical noise current values. The electrochemical probes include a pair of working electrodes formed of the same material of the monitored metal pipes or storage vessels and a reference electrode formed of a corrosion resistant material. Each of the pair of working electrodes has a defined surface roughness. One of the pair of working electrodes has reduced roughness, whereby sensitivity to sustained localized pitting corrosion is increased in the working electrode with reduced roughness. By reducing the surface roughness of one of the pair of working electrodes, increased sensitivity to sustained localized pitting corrosion is provided while the current noise can be used to accurately measure the general corrosion rate on the unpolished electrode.

Inventors:
; ; ;
Issue Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531439
Patent Number(s):
6294074
Application Number:
09/573,575
Assignee:
The University of Chicago (Chicago, IL)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 2000-05-18
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Lin, YuPo J., St. Martin, Edward J., Frank, James R., and Pope, Daniel H. Electrode design for corrosion monitoring using electrochemical noise measurements. United States: N. p., 2001. Web.
Lin, YuPo J., St. Martin, Edward J., Frank, James R., & Pope, Daniel H. Electrode design for corrosion monitoring using electrochemical noise measurements. United States.
Lin, YuPo J., St. Martin, Edward J., Frank, James R., and Pope, Daniel H. Tue . "Electrode design for corrosion monitoring using electrochemical noise measurements". United States. https://www.osti.gov/servlets/purl/1531439.
@article{osti_1531439,
title = {Electrode design for corrosion monitoring using electrochemical noise measurements},
author = {Lin, YuPo J. and St. Martin, Edward J. and Frank, James R. and Pope, Daniel H.},
abstractNote = {An electrode design is provided for corrosion monitoring using electrochemical noise measurements. Electrochemical probes are used for sensing electrochemical noise voltage values and electrochemical noise current values. The electrochemical probes include a pair of working electrodes formed of the same material of the monitored metal pipes or storage vessels and a reference electrode formed of a corrosion resistant material. Each of the pair of working electrodes has a defined surface roughness. One of the pair of working electrodes has reduced roughness, whereby sensitivity to sustained localized pitting corrosion is increased in the working electrode with reduced roughness. By reducing the surface roughness of one of the pair of working electrodes, increased sensitivity to sustained localized pitting corrosion is provided while the current noise can be used to accurately measure the general corrosion rate on the unpolished electrode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {9}
}

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