| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Seaborg Institutes: Emerging Topics in Actinide Sciences
|
| Presentation Title |
Corrosion Testing of Chemically Modified Tantalum Coupons in a Molten Salt Environment with Chlorine and Oxygen Gases |
| Author(s) |
Greg Chipman, Tatiana Ayers |
| On-Site Speaker (Planned) |
Greg Chipman |
| Abstract Scope |
Pyrochemical processes are used to purify metals found in nuclear waste. These processes often involve molten salts while some of them also utilize reactive gases such as chlorine and oxygen gasses. The processes are always conducted at high temperatures (>600 ℃ ). Due to this highly corrosive environment, process equipment tend to have shorter utilization times.. The goal of this study is to identify surface modifications that can improve tantalum performance in high temperature molten-salt environments that utilize chlorine and oxygen gases. Tantalum is a refractory metal commonly used at high temepartures due to its inert behavior, however, tantalum is highly susceptible to the described environment of interest. After conducting a literature review, the authors selected various treatments of tantalum coupons for testing including caburization, nitriding, and oxynitriding. The resulting corrosion resistance will be tested by immersion tests in molten salts sparged with mixtures of chlorine and oxygen gases. |
| Proceedings Inclusion? |
Planned: |