|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Environmental Degradation of Multiple Principal Component Materials
||Corrosion Interactions between a Candidate Hollandite Waste Form and Stainless Steel
||Chandi Mohanty, Keith Bryce, Xiaolei Guo, Kun Yang, Jie Lian, Jianwei Wang, Gerald Frankel
|On-Site Speaker (Planned)
The static leaching characteristics of Ba from barium hollandite with targeted composition BaFe2Ti6 O16 was studied in intimate contact with stainless steel (SS) 316L in a 0.6M NaCl solution. The synthesized hollandite waste form was characterized by XRD, Raman spectroscopy and SEM. Localized corrosion of SS enhances the leaching of the hollandite waste form by creating a low pH environment in the tight crevice formed between the two materials. The corroded hollandite surface consists of a discontinuous and highly porous Fe-Ti rich layer with minor amounts of Ba. Raman spectroscopy shows that hollandite leaching leads to an increase in the amount of rutile phase due to preferential leaching of Ba from the A site. Evidence from XPS shows the oxidation of Ti3+ to Ti4+ with breaking of the A-site channel, which facilitates Ba leaching.
||Ceramics, Nuclear Materials,