Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 510, Issue -, Pages 93-99Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2018.07.061
Keywords
Fuel cladding; Accident tolerant fuel; Surface modification; Corrosion; Strength
Funding
- National Research Foundation of Korea grant - Korea government (MSIP) [2017M2A8A5015058]
- National Research Foundation of Korea [2017M2A8A5015058] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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ATF claddings are defined as those that provide considerably increased response time in the event of a reactor accident while providing performance similar to or better than that of the commercial zirconium (Zr) cladding during normal operation. Surface modification technology consists of a coating technique for increasing oxidation resistance and an oxide dispersion strengthened (ODS) for improving high temperature strength. The CrAl alloy and Cr coating were applied by arc ion plating method and the FeCrAl alloy coating was applied by 3D laser coating. The ODS structure is prepared by 3D laser scanning technology using oxide powder. The prepared specimens were evaluated for corrosion/oxidation and mechanical behavior in normal and accident conditions. In the surface-modified Zr cladding concept, the oxidation resistance and strength at high temperature can be improved considerably over commercial Zr-based alloy cladding by a combination of two types of surface modification technology of the surface coating and partial oxide dispersion strengthened (ODS) treatment. From the various performance evaluations, the surface-modified Zr cladding concept shows promise as an ATF cladding. (C) 2018 Elsevier B.V. All rights reserved.
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