| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Solid-state Processing and Manufacturing for Extreme Environment Applications: Integrating Insights and Innovations
|
| Presentation Title |
Cold Spray Coating Technology to Enhance Accident Tolerance of Control Rods in LWRs |
| Author(s) |
Noah Anderson, Bennett LaSalle, William Ward, Hakan Ozaltun, Evan Willing, Kasturi Sasidhar, Hwasung Yeom, Kumar Sridharan |
| On-Site Speaker (Planned) |
Noah Anderson |
| Abstract Scope |
In addition to the fuel cladding, the survivability of control rod assembly components in LWRs during accident conditions must also be addressed. Excessive oxidation of the control rod sheath material and the formation of low melting point eutectic compounds or solid-state interdiffusion between control rod sheath material and Zr-alloy guide tube can be a concern. Cr coatings deposited by solid-state cold spray technology were very effective in suppressing oxidation of 316L austenitic stainless steel and exploratory control rod sheath materials in high temperature steam at 1200oC. They additionally served as effective diffusion barriers between these sheath materials and Zr-alloy guide tube in the temperature range of 900oC to 1200oC. The phase evolution at the interfaces in diffusion-couple experiments in this temperature range were investigated by X-ray diffraction, cross-sectional energy dispersive spectroscopy and electron back scattered diffraction measurements and validated using CALPHAD-based thermodynamic and kinetic models. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Surface Modification and Coatings, Other |