b'Figure 4. SiC/SiC composite tubes coated with Cr mitigation coating. The tubes are each 75 mm long.In this research, second-generationstructure is desirable for use as Cr coating on the cladding outera coating for SiC/SiC composite surface was discovered to be afuel cladding because it maximizes potential mitigation strategy foradhesion while allowing for a ductile overcoming the cracking issuetop layer that can blunt cracks that (Figure 4). To increase the coatinginitiate in the substrate. Currently, adhesion and ductility of the first- PIE of the hybrid Cr coating irradi-generation Cr coating that the ORNLated in HFIR is being conducted. The team designed, hybrid physicalexperiment will provide critical data vapor deposition methods werethat assess the radiation resistance of employed. Using an initial HiPIMSthe mitigation coating.Cr layer before depositing the CA Cr improved the adhesion of the HiPIMS Cr and reduced the cracking/spalling of the CA Cr. This combined 2021|AFC ACCOMPLISHMENTS 79'