|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advanced Functional and Structural Thin Films and Coatings
||A-7: Tribocorrosion Performance of Polymer-derived Ceramic Coatings on 304 Stainless Steel
||Wenbo Wang, Senam Tamakloe, Wenjun Cai, Kathy Lu
|On-Site Speaker (Planned)
Nowadays, most spent nuclear fuel is enclosed in 304 stainless steel canisters. However, the aggressive and long-term brine storage conditions require anti-corrosion surfaces to keep canisters secure. Ceramic-based coatings such as silicon-based oxide are promising materials to protect canisters due to their low cost, excellent wear and corrosion resistance. In this work, perhydropolysilazane (PHPS)-derived ceramic coatings were synthesized on 304 stainless steel substrate by crosslinking at room temperature and by pyrolysis at 600°C. Potentiodynamic test indicated that the corrosion resistance of the substrate in a 0.6 M NaCl aqueous solution is significantly improved after coating application. Comparing the coatings fabricated at different pyrolysis temperature, better tribocorrosion resistance was observed in the coating synthesized at 600 °C. This work could shed light on the design strategy of corrosion-protective coatings for nuclear waste storage units used in harsh environments.
||Surface Modification and Coatings, Ceramics, Nuclear Materials