About this Abstract |
Meeting |
MS&T23: Materials Science & Technology
|
Symposium
|
15th Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing
|
Presentation Title |
Corrosion Resistant Coatings on Steel for Nuclear Energy Applications |
Author(s) |
Kathy Lu, Hyeon Joon Choi |
On-Site Speaker (Planned) |
Kathy Lu |
Abstract Scope |
Corrosion of spent nuclear fuel storage canister is a serious concern due to deposition of corrosive marine salts by inducing chloride-induced pitting corrosion. Ceramic coatings are desirable options thanks to their high resistance to corrosive environments and good mechanical properties. In this study, SiON and SiOCN coatings have been developed based on polysilazane and polysiloxane preceramic polymers. Coating composition and structural evolution were analyzed as a function of processing parameters. The SiOCN amorphous coating showed improved hardness and reduced modulus than the SiON layer only. The coating can also be repaired after damage. When perhydropolysilazane (PHPS) was applied as a protective coating to a stainless steel weld, the effect of the substrate properties on the coating has been analyzed. This coating approach provides a promising method of extending the lifetime of nuclear waste containers in corrosive conditions. |