Interpretation of ENA data from accelerated exposure of modified ZRP based on modelling of coating electrical properties as related to corrosion of the substrate

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25794787%3A_____%2F22%3AN0000014" target="_blank" >RIV/25794787:_____/22:N0000014 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Interpretation of ENA data from accelerated exposure of modified ZRP based on modelling of coating electrical properties as related to corrosion of the substrate

Original language description

The possible differences in the protective performance of modified ZRP with the same OPVC (40 vol. %) but with different type of fillers were confirmed by new interpretation of ENA data in combination with single frequency (1 kHz) impedance test results. By this approach changes of resistivities and dielectric constants (identified on tested coating systems in the end of accelerated exposure) can be related to delamination tendency of given type of coating in 0.05 M NaCl after 168 hrs of exposure. It was found the electrical properties of tested coting systems were changed with immersion time rather differently for combination of Zn dust with MIO or aluminium type of fillers. Water/electrolyte uptake determination based on modelling of coating electrical properties by the above-mentioned approach provided evidence of different polymer changes during exposure for combinations of Zn/MIO or Zn/Al particles distributed within this type of coatings. This paper has been presented on the conference EUROCORR 2022, Berlin, Germany.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů