b'Figure 1. University of California Berkeley project led by Peter Hosemann was successful in analyzing the fiber-matrix interfacial debond/sliding mechanisms in nuclear grade SiC composite by innovative multi-scale experimental characterizations. Experiment was conducted by graduate student Joey Kabel.CHF values comparable to bare Zirloof a few monolayers of hydrophobicFigure 1. Overview of four NEUP project samples, while slightly lower CHFcarbonaceous species on surface canparticipants studying thermal-hydraulic values were observed for Cr coatedaffect CHF values. The trends in CHFbehavior of ATF materials.samples and CVD SiC. As-depositeddata are being analyzed in terms of the Cr coatings showed 67% higher CHFevolution of the surface characteristics than the as-polished Cr coatings dueof the ATF materials.to its higher surface roughness. CHFProject 17-12647enhancement was generally observed for autoclave treated samples exceptTitle: Determination of Critical Heat Flux for Cr coatings since minimal corro- and Leidenfrost Temperature on Candi-sion was observed post-test. Similardate Accident Tolerant Fuel MaterialsCHF values of bare Zirlo, FeCrAlInvestigators: M. Bucci, B. Phillips, coating, and CVD SiC samples wereG. Su (Massachusetts Institute of observed after autoclave testing, butTechnology), M. Anderson, D. Lee there was negligible change in the(University of Wisconsin Madison), Z. CHF for Cr coatings. XPS studies indi- Karoutas and Q. Wan (Westinghouse cated that the formation or depositionElectric Company)2020|AFC ACCOMPLISHMENTS 39'