Enhanced mechanical property and radiation resistance of reduced graphene oxide/tungsten composite with nacre-like architecture
| Autor: | Jiangchao Liu, Hang Xu, Shuyao Si, Lanli He, Shilian Dong, Xiangheng Xiao, Changzhong Jiang, Chongyang Tang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Graphene Composite number Oxide chemistry.chemical_element 02 engineering and technology Nanoindentation Tungsten 021001 nanoscience & nanotechnology law.invention chemistry.chemical_compound 020303 mechanical engineering & transports 0203 mechanical engineering chemistry law Powder metallurgy Ceramics and Composites Hardening (metallurgy) Composite material 0210 nano-technology Radiation resistance Civil and Structural Engineering |
| Zdroj: | Composite Structures. 245:112361 |
| ISSN: | 0263-8223 |
| DOI: | 10.1016/j.compstruct.2020.112361 |
| Popis: | Nuclear materials combining excellent mechanical property and radiation resistance are highly demanded. Here, inspired natural nacre, we fabricated reduced graphene oxide/tungsten composite (RGO/W) with laminated structure by powder metallurgy (PM) method. The relationship between structure design, mechanical hardness and radiation-induced hardening of RGO/W composite were evaluated by nanoindentation. Results revealed that mechanical hardness of nacre-like RGO/W composite was enhanced by 76% in comparison with nacre-like W and was similar to commercial W. Further, under 28.92 displacement per atom (DPA), hardening rate of nacre-like RGO/W composite was lower (18.6%) than that of nacre-like W (129.2%) and commercial W (40.1%). Reasons were attributed to reinforcement effect of RGO and nacre-like structure, which provided numerous RGO-W interfaces as load bearer and helped heal radiation-induced defects. Our work highlights a promising structure design strategy for enhancing damage resistance and mechanical property of nuclear materials by designing nacre-like architecture. |
| Databáze: | OpenAIRE |
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