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- W4308308615 abstract "• We apply concept of high-entropy pyrochlore to simultaneously solidify multiple radionuclides. • High-entropy pyrochlore exhibits good mechanical property possibly attributed to lattice distortion. • The irradiation result shows high-entropy pyrochlore has good radiation resistance. • Raman analysis confirms that high-entropy pyrochlore has serious lattice distortion. High entropy ceramics have recently attracted a lot of attention due to their superior physical properties. In this work, a novel high entropy pyrochlore (Lu 0.2 Y 0.2 Gd 0.2 Eu 0.2 Sm 0.2 ) 2 Ti 2 O 7 (HTP-1) was designed and prepared. Sample was characterized by X-ray diffraction, Raman spectroscopy and transmission electron microscopy coupled with an energy dispersive spectrometry. The results show that single-phase HTP-1 is successfully synthesized and exhibits severe lattice distortion. The Vickers hardness of HTP-1 measured by the microhardness tester is ∼ 922.28 Hv, which is significantly higher than the result calculated with the mixture rule, demonstrating that high entropy pyrochlore has high mechanical hardness. In-situ TEM was performed on HTP-1 irradiated with 800 keV Kr 2+ at room temperature to investigate irradiation resistance of sample. The critical amorphization dose of HTP-1 is 0.27 dpa, which indicates the irradiation resistance of HTP-1 is between Sm 2 Ti 2 O 7 and Y 2 Ti 2 O 7 ." @default.
- W4308308615 created "2022-11-10" @default.
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- W4308308615 date "2022-12-01" @default.
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- W4308308615 title "Mechanical property and irradiation resistance of high entropy pyrochlore (Sm0.2Eu0.2Gd0.2Y0.2Lu0.2)2Ti2O7" @default.
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- W4308308615 doi "https://doi.org/10.1016/j.nimb.2022.10.011" @default.
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