Development of Standardized Property Requirements, Measurement Methods, and Reporting Guidance for Coatings

Gräning, Tim; Sweet, Ryan; Mouche, Peter A.; Linton, Kory; Mulligan, Padhraic; Nelson, Andrew T.

doi:10.2172/1814349

Cited by 1 publication

(1 citation statement)

References 57 publications

(89 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For that reason, the impact of those islands and the substrate bias on the overall properties need to be investigated. A recent report has highlighted those properties with the highest priorities [19]. A higher substrate bias leads to a dense coating, which potentially protects the cladding against oxidation and grid-to-rod-fretting [20,21].…”

Section: Microstructure Investigationmentioning

confidence: 99%

Impact of Coating Defects on Performance of Coated Zirconium Cladding

Seibert¹,

Kane²,

Garrison³

et al. 2021

Self Cite

View full text Add to dashboard Cite

The Advanced Fuels Campaign has made progress in developing an ability to fabricate high quality 'generic' chromium coatings applied to commercial nuclear cladding alloys free of the proprietary considerations inherent to the industry materials. The availability of such source material is critical for execution of fundamental studies as well as open collaboration between the national laboratories, within Office of Nuclear Energy programs, and the Nuclear Regulatory Commission. This milestone report provides insights on the impact of processing parameters on the microstructure of 7 micron Cr-coated Zircaloy-4. Coatings were applied using High Power Impulse Magnetron Sputtering (HiPIMS). Scanning electron microscopy was utilized to investigate the overcoating of cladding and cross-sections of the interface. Characterization confirmed that a high quality, continuous coating was achieved. Burst testing was then performed to evaluate the performance of high-quality coatings to coatings that contain known flaws and uncoated materials. Results demonstrated that coatings containing flaws allowing for direct exposure of the base cladding to atmosphere exhibit burst behavior matching that of the uncoated material. However, continuous coatings resulted in measurable improvement. This work will be expanded in FY22 to include a broader set of mechanical property studies and test irradiations.

show abstract

Section: Microstructure Investigationmentioning

confidence: 99%