Preliminary characterization and projections of PVD coatings on SiC cladding for light water reactors

Caen Ang, David Carpenter, Kurt Terrani, Yutai Katoh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

Physical Vapor Deposition (PVD) based CrN, Cr and TiN are currendy the leading mitigation coatings for SiC-based Light Water Reactor (LWR) fuel dadding. This manuscript describes the morphology, phase analysis and elemental composition of coatings deposited by commercial vendors on SiC dad materials. The coatings showed continuous crack-free morphology with few microstructural flaws. X-ray analysis and spectroscopy indicated high purity >99.9%. Mechanical tests of coating debonding (by ASTM D4541) and scratch-indentation (by ASTM E2546) were conducted. Strong interface bonding was observed and higher resistance to normal and shear stresses was observed from thicker coatings. Preliminary developments in scratch testing, phase analysis, future needs and expected behavior under irradiation are discussed.

Original languageEnglish
Title of host publicationCeramic Engineering and Science Proceedings
EditorsJingyang Wang, William G. Fahrenholtz, Tobias Fey, Kiyoshi Shimamura, Paolo Colombo, Michael Halbig, Kathleen Shurgart, William J. Weber, Waltraud Kriven, Yiquan Wu, Soshu Kirihara, Jake Amoroso
PublisherAmerican Ceramic Society
Pages119-134
Number of pages16
Edition3
ISBN (Electronic)9781119519645, 9781119543268, 9781119543305
StatePublished - 2019
Event42nd International Conference on Advanced Ceramics and Composites, ICACC 2018 - Daytona Beach, United States
Duration: Jan 21 2018Jan 26 2018

Publication series

NameCeramic Engineering and Science Proceedings
Number3
Volume39
ISSN (Print)0196-6219

Conference

Conference42nd International Conference on Advanced Ceramics and Composites, ICACC 2018
Country/TerritoryUnited States
CityDaytona Beach
Period01/21/1801/26/18

Funding

The authors would like to thank Shawn Reeves, Jordan Couch and Jim Kiggans for technical support. The authors also thank Aaron Selby for FIB specimen preparation to produce SEM cross-sections of the “gouged” coatings as well as Braden Altstatt and Andrea Novitsky (Nanovea Inc, CA) for conducting the scratch indentation testing. The authors thank Jim Kiggans and Stephen Raiman (ORNL) for critical review and Rhonda Lott (UTK) for editorial review Coatings were prototype experimental and commercial products from Techmetals Inc., OH (TM- TiN, TM-CrN) and Richter-Precision, Inc. PA (RP-Cr, RP-CrN/Cr2N/Cr). Research was sponsored by the Advanced Fuels Campaign of the Fuel Cycle R&D program, Office of Nuclear Energy, U.S. Department of Energy under contract DE-AC05-OOOR22725 with UT-Battelle, LLC.

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