THE OBJECTIVE OF THIS PROJECT IS TO DEVELOP A TUNGSTEN-CERAMIC COMPOSITE THAT MEETS THE REQUIREMENTS FOR USE AS A PFC MATERIAL. THERE ARE SEVERAL APPLICABLE PERFORMANCE CHARACTERISTICS, WITH METRICS AND TARGET VALUES SET BY CHADWICK: • IRRADIATION-INDUCED EMBRITTLEMENT: FRACTURE TOUGHNESS >30 MPA VM • IRRADIATION-INDUCED SWELLING: PEAK VOLUMETRIC SWELLING <1% • THERMAL CONDUCTIVITY: 340 W/M•K AT ROOM TEMPERATURE • PLASMA EROSION: 85 NM/HOUR AT ELEVATED TEMPERATURE AND PLASMA ION FLUX • TRITIUM RETENTION: 2 × 1020 TRITIUM/VPA-M3 AT 650°C • TRITIUM DIFFUSIVITY: 3.2 × 10-8 M2/S AT 650°C THE FINAL DELIVERABLE WILL BE A BULK MATERIAL SAMPLE THAT DEMONSTRATES THE PRODUCT SCALABILITY REQUIREMENTS. THESE INCLUDE MEETING THE MINIMUM UNIT SIZE (50 MM Î 50 MM Î 5 MM) AND PROVIDING 25 UNITS THAT CAN COVER AN AREA OF 250 MM Î 250 MM. ADDITIONAL PERFORMANCE CHARACTERISTICS RELATE TO THE MANUFACTURABILITY, SPECIFICALLY TOLERANCE, RELIABILITY, AND COST OF RAW MATERIALS.