Abstract
A model for the volatization of ytterbium disilicate (YbDS) by water vapor is developed. The new model is based on the Deal & Grove theory of the thermal oxidation of silicon [1], generalized here to account for the multistep, second-order chemical reactions for silica depletion, multi-component mixture effects, and the unsteady porous microstructural evolution of the corroded inner zone. With the new model, the fundamental kinetic rate and standard porous media parameters are determined using the atmospheric steam jet impingement experiment of Ridley & Opila [2] and compared to results from the original Deal & Grove model. Fixing the input parameters in each respective model, a validation study (blind prediction) is presented for the high Reynolds number (1 × 10 5 ) and high pressure (14.7 atm) burner rig experiment of Wan et al. [3].
| Original language | English |
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| Title of host publication | Aircraft Engine; Ceramics and Ceramic Composites |
| Publisher | American Society of Mechanical Engineers (ASME) |
| ISBN (Electronic) | 9780791888766 |
| DOIs | |
| State | Published - 2025 |
| Event | 70th ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, GT 2025 - Memphis, United States Duration: Jun 16 2025 → Jun 20 2025 |
Publication series
| Name | Proceedings of the ASME Turbo Expo |
|---|---|
| Volume | 1 |
Conference
| Conference | 70th ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, GT 2025 |
|---|---|
| Country/Territory | United States |
| City | Memphis |
| Period | 06/16/25 → 06/20/25 |
Funding
This work was supported by the U.S. Department of Energy, Office of Fossil Energy and Carbon Management, Advanced Turbine Program. This manuscript has been authored by UTBattelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy.