| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advances in High-Temperature Oxidation and Degradation of Materials for Harsh Environments: A SMD and FMD Symposium Honoring Brian Gleeson
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| Presentation Title |
The Third Element Effect of FeCrAl Alloys in High Temperature Oxidation with Aqueous Corrosion Connections |
| Author(s) |
Catherine Lynch, Elizabeth Opila, John R. Scully |
| On-Site Speaker (Planned) |
Catherine Lynch |
| Abstract Scope |
FeCrAl alloys employ the third element effect for unique corrosion resistance. FeCrAls are resistant to both high temperature oxidation because of stable alumina scale formation and aqueous corrosion due to chromia film formation. This makes it an important candidate for accident tolerant fuel cladding in nuclear plants. The third element effect is explored in high temperature exposures using thermogravimetric analysis (TGA) at 800°C and 1000°C to record oxidation kinetics via weight gain. These temperatures were chosen to see the effects of oxidation with and without significant chromia volatilization. The oxide scales from these tests are characterized via SEM and XRD to further explore the effects of microstructure and oxide phase formation on oxidation kinetics. These results are juxtaposed with results from room temperature aqueous corrosion to compare and contrast the passivation mechanisms. |