|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Powder Materials for Energy Applications
||Energy Concentration Joining of Nuclear-grade SiC/SiC Composites for Next Generation Nuclear Reactors
||Geuntak Lee, Shirley Chan, Eugene Olevsky
|On-Site Speaker (Planned)
The energy and cost-efficient joining technology of nuclear-grade-silicon carbide (SiC) fiber reinforced SiC matrix composites (SiC/SiC) is experimentally and theoretically demonstrated. Two types of SiC/SiC composites fabricated by chemical vapor infiltration (CVI) and nano-powder infiltration and transient eutectic-phase technique (NITE) are used for the joining experiments. The joined SiC/SiC plates are obtained by the Energy Concentration Joining (ECJ) technique which focuses the electric current and heat near the joining interface. The joining strength is measured by a single lap offset test. For comparison, α-SiC tubes, which have low electrical conductivity, are joined and tested by the torsion test. Also, the localized mechanical property is assessed by the nanoindentation for SiC/SiC and Vickers hardness test for α-SiC. Before and after joining the microstructure and crystal structure of the SiC/SiC components are measured by a scanning electron microscope (SEM) and X-ray diffraction (XRD).
||Planned: Supplemental Proceedings volume