b'Figure 3. Weight change data for various types of Cr coatings compared to uncoated SiC from a 30-day static pure water hydrothermal corrosion test conducted at 360 Ccladding offers greatly improvedconsidered for the application of SiC-safety performance in severe accidentSiCf composites in steam and high scenarios compared to Zr-alloys andtemperature aqueous environments.has the potential for use as an ATF design in both existing and futureAccomplishments:reactors. SiC also offers the potentialIn the first stage of the project, for improved reactor efficiency based a variety of coating and surface on its lower neutron absorptionmodification technologies were cross section, good radiationevaluated, followed by initial perfor-resistance, and ability to withstandmance screening of the resultant higher burn-ups. However, the mostsamples. Cold spray deposition of significant impediment to the useCr and Fe-Cr-Al and a chromizing of SiC-SiCf composite fuel claddingthermal diffusion treatment is hydrothermal corrosion, and thisdemonstrated limited feasibility due project seeks to overcome this chal- to the high hardness and thermal lenge by the development of PVD Crstability of the SiC substrate mate-coatings. These coatings may also berial. Through collaborations with 2022|AFC ACCOMPLISHMENTS 75'