|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accident Tolerant Fuels for Light Water Reactor
||Enhanced Accident Tolerant Zirconium-silicide Coated LWR Fuel Cladding
||Hwasung Yeom, Cody Lockhart, Robert Mariani, Xianming Bai, Peng Xu, Kumar Sridharan
|On-Site Speaker (Planned)
This work describes the development of zirconium-silicide coatings for enhancing the accident tolerance of zirconium-alloy LWR fuel cladding. The oxidation and corrosion behavior of bulk zirconium-silicide of various stoichioimetries is first discussed followed by work on optimization of zirconium-silicide coatings deposited by magnetron sputtering and slurry methods. Samples from the above tests were analyzed using scanning electron microscopy in conjunction with energy dispersive spectroscopy and focused-ion beam sectioning, x-ray diffraction, and x-ray photoelectron spectroscopy, and scanning transmission electron microscopy to evaluate the fundamental mechanisms of oxidation in the zirconium-silicide coatings. In addition, transient boiling heat transfer of modified surfaces (including ZrSi2 coatings) during clad quenching experiments will be discussed. Boiling heat transfer was improved by surface modification approaches, which are reasonably explained by theoretical heat transfer model. The results demonstrate benefits of zirconium-silicide coatings for LWR cladding material to enhance accident tolerance.
||Planned: Supplemental Proceedings volume