The influence of lithium ions on corrosion of zirconium alloys

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F14%3A43898164" target="_blank" >RIV/60461373:22320/14:43898164 - 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
The influence of lithium ions on corrosion of zirconium alloys
Original language description
The influence of lithium ions on corrosion of two types of zirconium alloy Zr1Nb was investigated using electrochemical impedance spectroscopy (EIS). The long-term (up to 1000 hours) in-situ corrosion tests were carried out in the experimental high-pressure high-temperature loop (280 °C, 8 MPa). The experiments were performed in lithiated environment as well as under WWER simulating conditions. The concentration of 70 ppm Li is considered as a significant limit value at which the enhanced corrosion ratestarts to occur. The influence of a higher concentration of lithium (200 ppm) on corrosion characteristic of zirconium alloys was also compared. Impedance spectra were processed using suitable equivalent circuit to determine the transfer and diffusion parameters of the oxide layers. Especially significant are the values of the polarization resistance which are related to the instant corrosion rate. The oxide thickness was determined using Jonscher's analysis and by application of a mode
Czech name
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Czech description
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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