Koroze slitin Zr–Nb a Zr–Sn za simulovaných podmínek reaktoru VVER

A. Krausová; J. Macák; P. Sajdl; V. Renčiuková; R. Novotný

doi:10.1515/kom-2015-0020

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Koroze slitin Zr–Nb a Zr–Sn za simulovaných podmínek reaktoru VVER

Koroze a ochrana materiálu

Volume 59 (2015): Issue 4 (December 2015)

By: A. Krausová, J. Macák, P. Sajdl, V. Renčiuková and R. Novotný

Open Access

|Dec 2015

Abstract

The oxidation kinetics of zirconium alloys corrosion can be divided in two phases that are detached by a transient state. The occurrence of the transient state is crucial from the corrosion perspective, since it accelerates the oxidation rate. This work employs in-situ electrochemical impedance spectroscopy to study Zr-Nb and Zr-Sn alloys at the temperature of 340° and the pressure of 15 MPa in the environment simulating the cooling agent of PWR reactor. The goal of long-term experiments (up to 9000 hours) was to characterise oxidation kinetics, depending on the exposure time and the type of zirconium alloy. The results showed that the transient state is achieved sooner for the Zr-Sn alloy.

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Articles in this issue

DOI: https://doi.org/10.1515/kom-2015-0020 | Journal eISSN: 1804-1213 | Journal ISSN: 0452-599X

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Language: English, Czech

Page range: 99 - 102

Published on: Dec 30, 2015

Published by: Association of Czech and Slovak Corrosion Engineers

In partnership with: Paradigm Publishing Services

Publication frequency: Volume open

Related subjects:

Industrial chemistry,

Chemical engineering

© 2015 A. Krausová, J. Macák, P. Sajdl, V. Renčiuková, R. Novotný, published by Association of Czech and Slovak Corrosion Engineers
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 59 (2015): Issue 4 (December 2015)