155/157Gd areal density: A model for design and fabrication of Gd2O3/316L novel neutron shielding composites

Shipeng Wan; Wenxian Wang; Hongsheng Chen; Jun Zhou; Yuyang Zhang; Ruifeng Liu; Ruyi Feng

doi:10.1016/j.vacuum.2020.109304

^155/157Gd areal density: A model for design and fabrication of Gd₂O₃/316L novel neutron shielding composites

Shipeng Wan, Wenxian Wang, Hongsheng Chen, Jun Zhou, Yuyang Zhang, Ruifeng Liu, Ruyi Feng

School of Engineering (Behrend)

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The Monte Carlo N-Particle Code were used to design a novel Gd₂O₃/316L stainless steel neutron shielding composites (Gd₂O₃/316L NSCs). And the constitutive equation between the ^155/157Gd areal density and the neutron shielding rate was established by MCNP. When the areal density of ^155/157Gd is larger than 0.01 g/cm², the thermal neutron shielding rate of the composites reaches 99%. The NSCs with three weight fractions (1.5 wt%, 2.5 wt%, and 4.5 wt% Gd₂O₃) were successfully fabricated by spark plasma sintering. And Gd₂O₃ particles evenly distributed in 316L matrix. The main phases of the composite are austenite (γ-Fe) and Gd₂O₃, and in addition Fe₂Gd and Gd₂Ni₁₇ are present at the interface of Gd₂O₃ and 316L matrix particles. The debonding of the Gd₂O₃ particles is the main cause of material fracture.

Original language	English (US)
Article number	109304
Journal	Vacuum
Volume	176
DOIs	https://doi.org/10.1016/j.vacuum.2020.109304
State	Published - Jun 2020

All Science Journal Classification (ASJC) codes

Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films

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@article{903719b70d734c848e58cef36d3f3cbd,

title = "155/157Gd areal density: A model for design and fabrication of Gd2O3/316L novel neutron shielding composites",

abstract = "The Monte Carlo N-Particle Code were used to design a novel Gd2O3/316L stainless steel neutron shielding composites (Gd2O3/316L NSCs). And the constitutive equation between the 155/157Gd areal density and the neutron shielding rate was established by MCNP. When the areal density of 155/157Gd is larger than 0.01 g/cm2, the thermal neutron shielding rate of the composites reaches 99%. The NSCs with three weight fractions (1.5 wt%, 2.5 wt%, and 4.5 wt% Gd2O3) were successfully fabricated by spark plasma sintering. And Gd2O3 particles evenly distributed in 316L matrix. The main phases of the composite are austenite (γ-Fe) and Gd2O3, and in addition Fe2Gd and Gd2Ni17 are present at the interface of Gd2O3 and 316L matrix particles. The debonding of the Gd2O3 particles is the main cause of material fracture.",

author = "Shipeng Wan and Wenxian Wang and Hongsheng Chen and Jun Zhou and Yuyang Zhang and Ruifeng Liu and Ruyi Feng",

year = "2020",

month = jun,

doi = "10.1016/j.vacuum.2020.109304",

language = "English (US)",

volume = "176",

journal = "Vacuum",

issn = "0042-207X",

publisher = "Elsevier Limited",

}

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T2 - A model for design and fabrication of Gd2O3/316L novel neutron shielding composites

AU - Wan, Shipeng

AU - Wang, Wenxian

AU - Chen, Hongsheng

AU - Zhou, Jun

AU - Zhang, Yuyang

AU - Liu, Ruifeng

AU - Feng, Ruyi

PY - 2020/6

Y1 - 2020/6

N2 - The Monte Carlo N-Particle Code were used to design a novel Gd2O3/316L stainless steel neutron shielding composites (Gd2O3/316L NSCs). And the constitutive equation between the 155/157Gd areal density and the neutron shielding rate was established by MCNP. When the areal density of 155/157Gd is larger than 0.01 g/cm2, the thermal neutron shielding rate of the composites reaches 99%. The NSCs with three weight fractions (1.5 wt%, 2.5 wt%, and 4.5 wt% Gd2O3) were successfully fabricated by spark plasma sintering. And Gd2O3 particles evenly distributed in 316L matrix. The main phases of the composite are austenite (γ-Fe) and Gd2O3, and in addition Fe2Gd and Gd2Ni17 are present at the interface of Gd2O3 and 316L matrix particles. The debonding of the Gd2O3 particles is the main cause of material fracture.

AB - The Monte Carlo N-Particle Code were used to design a novel Gd2O3/316L stainless steel neutron shielding composites (Gd2O3/316L NSCs). And the constitutive equation between the 155/157Gd areal density and the neutron shielding rate was established by MCNP. When the areal density of 155/157Gd is larger than 0.01 g/cm2, the thermal neutron shielding rate of the composites reaches 99%. The NSCs with three weight fractions (1.5 wt%, 2.5 wt%, and 4.5 wt% Gd2O3) were successfully fabricated by spark plasma sintering. And Gd2O3 particles evenly distributed in 316L matrix. The main phases of the composite are austenite (γ-Fe) and Gd2O3, and in addition Fe2Gd and Gd2Ni17 are present at the interface of Gd2O3 and 316L matrix particles. The debonding of the Gd2O3 particles is the main cause of material fracture.

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