Abstract
To increase efficiency, a wide range of energy-related applications is pushing components to higher temperatures where environmental degradation can be life limiting. Unlike mechanical properties such as creep, there is no simple degradation parameter to capture the time-temperature-thickness limitations of candidate alloys. An initial model has been proposed and additional work is in progress to validate the model with longer-term exposures at 900°C and modify the model to capture additional service parameters such as cycle frequency and the effect of water vapor. Additional issues are discussed including the minimum data required for a new alloy to be modeled in the proposed manner.
| Original language | English |
|---|---|
| Article number | 12751 |
| Journal | NACE - International Corrosion Conference Series |
| Volume | 2019-March |
| State | Published - 2019 |
| Event | Corrosion Conference and Expo 2019 - Nashville, United States Duration: Mar 24 2019 → Mar 28 2019 |
Funding
The authors would like to thank G. Garner, M. Stephens, G. Pillitiere, K. Unocic, A. Jalowicka, T. M. Lowe and T. Jordan for assistance with the experimental work. J. R. Keiser and J. Jun provided helpful comments on the manuscript. Research sponsored by the U. S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office, Combined Heat and Power Program. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).
Keywords
- High temperature oxidation
- Lifetime
- NiCr alloys