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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

  • DOI - Digital Object Identifier

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

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    JK - Corrosion and material surfaces

  • OECD FORD branch

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

  • e-ISSN

  • 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