DETERMINATION OF CARBON STEEL CORROSION RATE AT LOW CORROSION POTENTIALS BY MEANS OF A NEW ELECTROCHEMICAL METHOD
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902950" target="_blank" >RIV/60461373:22310/16:43902950 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
DETERMINATION OF CARBON STEEL CORROSION RATE AT LOW CORROSION POTENTIALS BY MEANS OF A NEW ELECTROCHEMICAL METHOD
Original language description
Determination of corrosion rate by means of electrochemical methods such as polarization resistance is limited to open-circuit conditions. In the case of cathodic protection, a protected object is polarized to protection potential by means of negative total current, the value of which is thus useless for quantifying corrosion rate. Long-time response physical methods, such as weight loss or electrical resistance technique are only applicable for corrosion rate determination under cathodic polarisation. A novel electrochemical method employing two working electrodes allows us to determine instantaneous corrosion rate at impressed potential even if the total current is negative. Anodic current density is extracted from two consecutively measured currents. The shape of the carbon steel corrosion rate curve at the impressed potential in the potassium carbonate solution was determined. At pH 11, carbon steel was spontaneously passive, however, at cathodic polarization to the Kuhn's protective potential, substantially elevated corrosion rate was indicated. The shape of the corrosion rate - impressed potential curve was confirmed by electrical resistance sensors exposed to aerated aqueous electrolyte under the same conditions.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JK - Corrosion and material surfaces
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA14-20856S" target="_blank" >GA14-20856S: The kinetics of corrosion processes and corrosion media transport in advanced ultra-high performance concretes (UHPC)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the conference METAL 2016
ISBN
978-80-87294-67-3
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
1117-1122
Publisher name
Tanger s.r.o.
Place of publication
Ostrava
Event location
Brno
Event date
May 25, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000391251200181