Hydrogenation Behavior of Cr-Coated Resistance Upset Welds of E110 Zirconium Alloy / E. B. Kashkarov, K. S. Gusev, V. N. Kudiyarov [et al.]

Set Level: CoatingsCoauthor: Kashkarov, E. B., Physicist, Associate Professor, Researcher of Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences, 1991-, Egor Borisovich;Gusev, K. S., physicist, Technician of Tomsk Polytechnic University, 2001-, Kirill Sergeevich;Kudiyarov, V. N., physicist, Associate Professor of Tomsk Polytechnic University, Candidate of Technical Sciences, 1990-, Victor Nikolaevich;Kurdyumov, N., physicist, engineer of Tomsk Polytechnic University, 1997-, Nikita;Sidelev, D. V., physicist, Associate Professor of Tomsk Polytechnic University, Candidate of Technical Sciences, 1991-, Dmitry VladimirovichLanguage: английский.Country: Switzerland.Abstract: The hydrogenation behavior of Cr-coated resistance upset welds (RUW) of E110 zirconium alloy was investigated at 360, 450 and 900 °C and a hydrogen pressure of 2 bar. The deposition of Cr coating, via magnetron sputtering, can decrease the hydrogen absorption rate of an RUW Zr alloy. The activation energy for the hydrogen absorption of Cr-coated specimens (84 kJ/mol) is higher in comparison with uncoated ones (71 kJ/mol), which indicates the deceleration of the hydriding of welded Zr alloys in the case of Cr coating deposition. A Cr coating can limit the formation of radially oriented hydrides and the hardening of RUW specimens at 360 and 450 °C. No significant difference in the hydrogen absorption rate was found at 900 °C. The application of Cr coating deposition to protect resistance-upset-welded Zr alloys in a hydrogen atmosphere is discussed..Bibliography: References: 39 tit.Subject: электронный ресурс | труды учёных ТПУ | resistance upset welding | hydrogenation | zirconium alloys | chromium | coating | accident tolerant fuel Online Resources:http://earchive.tpu.ru/handle/11683/74794 | https://doi.org/10.3390/coatings13020339
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References: 39 tit

The hydrogenation behavior of Cr-coated resistance upset welds (RUW) of E110 zirconium alloy was investigated at 360, 450 and 900 °C and a hydrogen pressure of 2 bar. The deposition of Cr coating, via magnetron sputtering, can decrease the hydrogen absorption rate of an RUW Zr alloy. The activation energy for the hydrogen absorption of Cr-coated specimens (84 kJ/mol) is higher in comparison with uncoated ones (71 kJ/mol), which indicates the deceleration of the hydriding of welded Zr alloys in the case of Cr coating deposition. A Cr coating can limit the formation of radially oriented hydrides and the hardening of RUW specimens at 360 and 450 °C. No significant difference in the hydrogen absorption rate was found at 900 °C. The application of Cr coating deposition to protect resistance-upset-welded Zr alloys in a hydrogen atmosphere is discussed.

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