Constructing high-performance radiation-resistant ternary YSZ-MgO-CNT nanocomposites via tailored nanostructures
Autor: | Jun Tang, Wenjing Qin, Tao Cheng, Lulu Hu, Yongqiang Wang, Mengqing Hong, Guangxu Cai, Feng Ren, Changzhong Jiang |
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Rok vydání: | 2021 |
Předmět: |
010302 applied physics
Materials science Nanocomposite Nanostructure Spark plasma sintering 02 engineering and technology Carbon nanotube 021001 nanoscience & nanotechnology Microstructure 01 natural sciences law.invention Chemical engineering law visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic 0210 nano-technology Ternary operation Yttria-stabilized zirconia |
Zdroj: | Journal of the European Ceramic Society. 41:5280-5291 |
ISSN: | 0955-2219 |
Popis: | Developing long-lifetime bulk-form ceramic-based materials with high irradiation resistance is crucial for advanced nuclear systems. Here, we incorporated carbon nanotubes (CNTs) into yttria-stabilized zirconia (YSZ) and magnesia (MgO) nanocrystals to fabricate bulk YSZ-MgO-CNT nanocomposites with abundant ternary nanostructures by spark plasma sintering. To understand the role of tailored ternary nanostructure on irradiation, we investigated the microstructure and mechanical properties evolutions of the YSZ-MgO-CNT nanocomposites irradiated by multi-energy He+ ions at high temperature to different fluences. Compared with the single-phase YSZ and ultrafine-grained YSZ-MgO composites, the YSZ-MgO-CNT nanocomposites possessed higher ability to manage irradiation-induced He bubbles/defects via the defect-interface interactions of proposed “loading-unloading” and “loading-transporting-unloading” mechanisms for controlling the dynamical behaviors of He atoms/defects in the CNT-doped ternary nanostructures, thereby presenting more stable microstructure and better performance in resisting irradiation hardening. This work provides insight into the design of advanced inert matrix nuclear fuel and new nuclear waste management materials. |
Databáze: | OpenAIRE |
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