Article
High temperature creep of 20 vol%. SiC-HfB2 UHTCs up to 2000 °C and the effect of La2O3 addition
Author/s | Zapata Solvas, E.
Gómez García, Diego Domínguez Rodríguez, Arturo Lee, W. E. |
Department | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Publication Date | 2018 |
Deposit Date | 2022-08-10 |
Published in |
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Abstract | High temperature compressive creep of SiC-HfB2 UHTCs up to 2000 °C has been studied. Microstructural analysis after deformation reveals formation of new phases in the Hf-B-Si and Hf-B-Si-C systems, which are responsible ... High temperature compressive creep of SiC-HfB2 UHTCs up to 2000 °C has been studied. Microstructural analysis after deformation reveals formation of new phases in the Hf-B-Si and Hf-B-Si-C systems, which are responsible for the poor creep resistance. RE oxide additions have a negative effect reducing the creep resistance of SiC-HfB2 UHTCs. A simplistic analysis for the required creep resistance is described, indicating that only SiC-HfB2 UHTCs could withstand re-entry conditions for 5 min in a single use. However, RE oxide addition to SiC-HfB2 UHTCs does not provide the required creep resistance for them to be candidate materials for hypersonic applications. |
Funding agencies | Ministerio de Economia, Industria y Competitividad (MINECO). España Engineering and Physical Sciences Research Council (EPSRC). United Kingdom |
Project ID. | AT2015-71411-R
EP/K008749/1 |
Citation | Zapata Solvas, E., Gómez García, D., Domínguez Rodríguez, A. y Lee, W.E. (2018). High temperature creep of 20 vol%. SiC-HfB2 UHTCs up to 2000 °C and the effect of La2O3 addition. Journal of the European Ceramic Society, 38 (1), 47-56. |
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