Nano-Oxide-Dispersed Ferritic Steel for Fusion Energy Systems
| Autor: | L. Hsiung, D. T. Hoelzer, S. J. Tumey, M. J. Fluss |
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| Rok vydání: | 2018 |
| Předmět: |
Void (astronomy)
Materials science Hydrogen Mechanical Engineering Oxide chemistry.chemical_element Nanoparticle 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials Transmission electron microscopy 0103 physical sciences Hydroxide General Materials Science Irradiation 010306 general physics 0210 nano-technology Helium |
| Zdroj: | MRS Advances. 3:1761-1769 |
| ISSN: | 2059-8521 |
| Popis: | The role of oxide nanoparticles in cavity formation of a nano-oxide-dispersed ferritic steel subjected to (Fe + He) dual-ion and (Fe + He + H) triple-ion irradiations has been studied using transmission electron microscopy to elucidate the synergistic effects of helium and hydrogen on radiation tolerance of nano-oxide-dispersed ferritic steel for fusion energy systems. The effect of oxide nanoparticles on suppressing radiation-induced void swelling is clearly revealed from the observation of preferred trapping of helium bubbles at oxide nanoparticles, which results in a unimodal distribution of cavities in the (Fe + He) dual-ion irradiated specimen. An adverse effect of hydrogen implantation, however, is revealed from the observation of a bimodal distribution of cavities with large and facetted voids in association with the formation of HFe5O8-based hydroxide in local regions of the (Fe + He + H) triple-ion irradiated specimen. |
| Databáze: | OpenAIRE |
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