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 language | English |
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Title of host publication | Ceramic Engineering and Science Proceedings |
Editors | Jingyang 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 |
Publisher | American Ceramic Society |
Pages | 119-134 |
Number of pages | 16 |
Edition | 3 |
ISBN (Electronic) | 9781119519645, 9781119543268, 9781119543305 |
State | Published - 2019 |
Event | 42nd International Conference on Advanced Ceramics and Composites, ICACC 2018 - Daytona Beach, United States Duration: Jan 21 2018 → Jan 26 2018 |
Publication series
Name | Ceramic Engineering and Science Proceedings |
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Number | 3 |
Volume | 39 |
ISSN (Print) | 0196-6219 |
Conference
Conference | 42nd International Conference on Advanced Ceramics and Composites, ICACC 2018 |
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Country/Territory | United States |
City | Daytona Beach |
Period | 01/21/18 → 01/26/18 |
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.