Design and mechanical properties of SiC reinforced Gd2O3/6061Al neutron shielding composites

Lian, Xupeng; Xu, Wenrui; Zhang, Peng; Wang, Wenxian; Xie, Lihua; Chen, Xiping

doi:10.1016/j.ceramint.2023.04.092

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…They are also used as a doping materials in metal oxides to increase their photoctatlytic activity 3 , blended with various polymers to increase their gamma shielding capacity 4 . These materials are of strategic importance and find applications in solid oxide fuel cells 5 , nuclear security applications 6 , neutron absorbers 7 , laser crystals 8 , 9 , nuclear waste host materials 10 , chemical machine polishing 11 , 12 , light emitting devices 13 , rare earth magnets, control rods for fast breeder reactors 14 , radiation sheilding 10 , 15 , 16 , and catalysis 17 etc. REO nanoparticles are also used for biomedical and dental applications 18 – 20 .…”

Section: Introductionmentioning

confidence: 99%

Pressure driven polymorphic transitions in nanocrystalline Lu2O3, Tm2O3 and Eu2O3

Bura,

Bhoriya,

Yadav

et al. 2023

Sci Rep

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The crystallite size of the materials considerably influences the material properties, including their compressibility and resistance to external forces and the stability of the crystalline structure; a corresponding study for which, so far, has been limited for the important class of nanocrystalline Rare Earth Sesquioxides (REOs). In the present study, we report the crystallographic structural transitions in nanocrystalline Rare Earth Oxides (REOs) under the influence of pressure, investigated via high-energy X-Ray Diffraction (XRD) measurements. The study has been carried out on three of the REOs, namely Lutetium oxide (Lu2O3), Thulium oxide (Tm2O3) and Europium oxide (Eu2O3) up to the pressures of 33, 22 and 11 GPa, respectively. The diffraction data of Lu2O3 and Tm2O3 suggests the occurrence of irreversible structural transitions from cubic to monoclinic phase, while Eu2O3 showed a transition from the cubic to hexagonal phase. The transitions were found to be accompanied by a collapse in the volume and the resulting Pressure–Volume (P–V) graphs are fitted with the 3rd order Birch-Murnaghan (BM) equation of state (EOS) to estimate the bulk moduli and their pressure derivatives. Our study establishes a qualitative relationship between the crystallite size and various material properties such as the lattice parameters, transition pressure, bulk modulus etc., and strengthens the knowledge regarding the behaviour of this technologically important class of materials.

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Section: Introductionmentioning

confidence: 99%

Pressure driven polymorphic transitions in nanocrystalline Lu2O3, Tm2O3 and Eu2O3

Bura,

Bhoriya,

Yadav

et al. 2023

Sci Rep

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“…Sun et al studied the tensile properties of the (HfNbTa)1-xTix multiprinciple elemental alloys with 5 group components by MD [23]. Lian et al investigated the tensile properties of 4 groups of SiC/Al composites with various strain rates to analyze the properties of SiC/Gd2O3/6061Al composites by MD simulation [24]. Although previous studies predicted and modified the mechanical properties of alloys, these works were limited to only one or two components of the alloy.…”

Section: Introductionmentioning

confidence: 99%

A novel IN718 superalloy of superior mechanical properties designed by the first principle and D-electron theory

Li,

Chen,

wang

et al. 2023

Preprint

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A novel IN718 superalloy has been designed based on the commercial IN718 alloy to improve its service performance in the aerospace field. Firstly, first principle calculations were performed to determine the total energy, formation enthalpy, and binding energy of the γ-Ni phase, Laves-Fe2Nb phase, and γ-Ni/Fe2Nb interface model doped with Co, Cr, Mo, V, and Zr atoms in IN718 superalloy. The calculation results reveal the influence of various atoms doping on the typical phases of the IN718 superalloy. Secondly, 8488 group’s suitable alloy composition data were selected from 831600 group’s datasets by D-electron theory and Python programs. Subsequently, the optimal alloy components were determined by thermodynamic calculations using the control variable. Finally, molecular dynamics tensile simulations and mechanical properties tests were conducted to validate the mechanical properties of the optimized superalloy. This entire calculation process serves as a reference for designing other alloy compositions.

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Microstructure, mechanical and corrosion property of neutron and γ-ray shielding (Gd2O3+W)/Al composites

Wang,

Xiao,

Huang

et al. 2024

Ceramics International

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Design and mechanical properties of SiC reinforced Gd2O3/6061Al neutron shielding composites

Cited by 4 publications

References 24 publications

Pressure driven polymorphic transitions in nanocrystalline Lu2O3, Tm2O3 and Eu2O3

Pressure driven polymorphic transitions in nanocrystalline Lu2O3, Tm2O3 and Eu2O3

A novel IN718 superalloy of superior mechanical properties designed by the first principle and D-electron theory

Microstructure, mechanical and corrosion property of neutron and γ-ray shielding (Gd2O3+W)/Al composites

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