Microstructural Effects and Mass Transport in Ion-implanted Energy Materials
EMSL Project ID
49138
Abstract
Fusion power can provide clean, safe and sustainable energy. One of the top grand challenges for fusion economy is the materials engineering. A project under the fusion materials program at PNNL, sponsored by DOE Office of Science FES (Fusion Energy Science), will be carried out under this EMSL science theme user proposal. The experimental studies will focus on the scientific issues associated with microstructures and precipitates of the energy materials (primarily SiC) under extreme conditions (high radiation and high temperature). Ion implantation will be used as an accelerated aging approach to simulate the irradiated microstructure and introduce transmutants or their surrogates in the structure for study. It will be performed in collaboration with external institutions. The work scope of this study will include ion-beam irradiation induced disordering processes in SiC, microstructural evolution, thermal and dynamic recoveries of defects, roles of interfaces, trapping and clustering of defects and implanted species, atomic diffusion and mass transport, precipitation of fusion transmutants or their surrogates, and relationship between structure and property. The primary objective of this research is to advance the fundamental understanding of irradiation effects on the microstructures and physical/chemical properties of fusion materials. The understanding gained from this study will have a significant impact on discovery of new materials that are extremely resistant to nuclear radiation, which could be used for rational design of fusion power systems. The knowledge will also be useful for structural materials of fission reactors as well as for advanced nuclear waste forms for long-term storage or permanent disposal of long-lived radionuclides from existing and future spent nuclear fuels. The research is aligned with the US national strategic plan for clean and sustainable energy and supports DOE/OBER and EMSL missions for discovery of novel energy materials and technological innovation for protection of environments.
Project Details
Start Date
2015-10-14
End Date
2016-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Related Publications
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