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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

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

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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