<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Increasing of nuclear safety, higher demands for longer nuclear fuel campaign and higher levels of burnout are based on improving the properties of zirconium alloys. Protective coatings appears to be a promising way to reduce their chemical reactivity and increase resistance to hydriding. In this work, a thin chromium coating applied to a standard Zr1Nb zirconium alloy was studied using in-situ impedance spectroscopy. Exposure was carried out at a temperature of 280 ° C and a pressure of 8 MPa in a simulated WWER primary coolant environment. The results show that the chromium-coated Zr1Nb alloy is under these conditions oxidized significantly slower than the non-coated alloy.</p></abstract>

Increasing of nuclear safety, higher demands for longer nuclear fuel campaign and higher levels of burnout are based on improving the properties of zirconium alloys. Protective coatings appears to be a promising way to reduce their chemical reactivity and increase resistance to hydriding. In this work, a thin chromium coating applied to a standard Zr1Nb zirconium alloy was studied using in-situ impedance spectroscopy. Exposure was carried out at a temperature of 280 ° C and a pressure of 8 MPa in a simulated WWER primary coolant environment. The results show that the chromium-coated Zr1Nb alloy is under these conditions oxidized significantly slower than the non-coated alloy.

Chromium Coating as a Surface Protection of Zirconium Alloys

Koroze a ochrana materiálu

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{"article-title":"Chromium Coating as a Surface Protection of Zirconium Alloys"}

Increasing of nuclear safety, higher demands for longer nuclear fuel campaign and higher levels of burnout are based on improving the properties of zirconium...

Chromium Coating as a Surface Protection of Zirconium Alloys

Published Online: Jan 11, 2018

Page range: 169 - 172

DOI: https://doi.org/10.1515/kom-2017-0021

© by A. Krausová

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.