Effect of N content on microstructure and properties of (AlTiCrNiTa)N coatings for accident-tolerant fuels

Zhang, Sha; Liu, Chunhai; Li, Zhuo; Zhang, Wei; Xiang, Yang; He, Hengji; He, Linxin; Yang, Hongyan; Liu, Ning; Hong, Chen; Yang, Jijun

doi:10.1016/j.intermet.2022.107728

Cited by 4 publications

(1 citation statement)

References 45 publications

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“…The deposition of a protective coating on the outer surface of Zr fuel claddings is suggested as a possible way to increase the "coping time" before the embrittlement and failure of fuel claddings. To date, metals (Cr) [6] and compound (TiN, CrN, SiC, CrC) [7,8], multicomponent (FeCrAl, AlCrY, (AlTiCrNiTa)N, CrAl) [9][10][11], and multilayer (Cr/CrN, Cr/ZrO 2 ) [12][13][14] coatings have been studied as candidate materials to improve the oxidation resistance of Zr alloys. Among many coating materials, chromium can be selected as more relevant due to its acceptable thermal neutron cross-section, relevant mechanical properties, and the formation of dense and stable oxide scales in supercritical water and under LOCA conditions.…”

Section: Introductionmentioning

confidence: 99%

Hydrogenation Behavior of Cr-Coated Resistance Upset Welds of E110 Zirconium Alloy

et al. 2023

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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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