b'Figure 3. SEM image of the best performing PVD combinatorial alloy coating with a composition of Zr(30%)Cr(50%)Ti(20%) as-receivedAccomplishments:subsequently coat them with our The first step in developing adesired compositions. To test this, commercially available, corrosiona total of 19 different coatings were resistant, high temperature barrierextensively investigated for corrosion coating for SiC was performingand mechanical properties. Among computer simulations andthem were TiN, TiCN, CrN, and ZrN developing models for expectedCVD coatings from two different performance of different coatingsuppliers, Ionbond and Diffusion systems. Oregon State UniversityAlloys, 3 different layered PVD lead the effort to simulate whichcoatings produced by collaborators coatings would excel at oxideat General Atomics using an in-house stability, adherence to substrate, andsystem, and 8 different combinatorial fuel performance when depositedand layered PVD coatings produced onto SiC. Ultimately titanium,by the Swiss Federal Laboratories for chromium, and zirconium-basedMaterials Science and Technology coatings were chosen to be coated(EMPA). A combination of heat treat-onto the SiC composites usingments performed by the University physical vapor deposition (PVD) andof California, Berkeley (UCB) and chemical vapor deposition (CVD).corrosion in simulated BWR environ-With this, commercial vendors werements performed by North Carolina found to produce SiC wafers andState University (NCSU) were tested 54 2022|AFC ACCOMPLISHMENTS'