Results 11 to 20 of about 5,476 (206)
Study of Radiation Resistance to Helium Swelling of Li2ZrO3/LiO and Li2ZrO3 Ceramics [PDF]
Crystals, 2022 The key aim of this paper is to study the presence effect of LiO impurity phases in Li2ZrO3 ceramics on the resistance to helium swelling and structural degradation during implanted helium accumulation in the near-surface layer structure.
Baurzhan Abyshev +4 more
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A helium-induced shift in the temperature dependence of swelling [PDF]
Journal of Nuclear Materials, 1979 Abstract In an annealed austenitic alloy undergoing bombardment with 4 MeV Ni ions to doses between 1 and 70 dpa at 840, 900, 950, 1025, and 1100 K, the introduction of simultaneously-implanted helium at a rate of 20 appm He/dpa moves the swelling versus temperature curve up the temperature scale by 40 to 70 K. Co-implantation of hydrogen (deuterium)
Farrell, K., Packan, N. H.
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Key Mechanistic Features of Swelling and Blistering of Helium-Ion-Irradiated Tungsten [PDF]
SSRN Electronic Journal, 2019 Helium-ion-induced swelling and blistering of single-crystal tungsten is investigated using a Helium Ion Microscope for site-specific dose-controlled irradiation (at 25 keV) with analysis by Helium Ion Microscopy, Atomic Force Microscopy and Transmission Electron Microscopy (cross-sectioning by Focused Ion Beam milling).
Frances I. Allen +2 more
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The inclusion of mobile helium in a rate theory model of void swelling [PDF]
Journal of Nuclear Materials, 1979 The effect of mobile helium on swelling has been studied by using a rate theory model of void growth. The partitioning of mobile helium to various internal sinks and the trapping of interstitial helium atoms by vacancies were included in the model. Helium gas generated during neutron irradiation increases swelling at temperatures above the peak void ...
M.H. Yoo, L.K. Mansur
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Swelling of Highly Neutron Irradiated Beryllium and Titanium Beryllide
Journal of Nuclear Engineering, 2022 The swelling of beryllium and titanium beryllide after irradiation at 70–750 °C to neutron fluences of (0.25–8) · 1022 cm−2 (E > 1 MeV) was measured using methods of immersion, dimension, and helium pycnometry.
Vladimir Chakin +3 more
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The influence of helium on microstructuralevolution in an ion-irradiated low-swelling stainless steel [PDF]
Journal of Nuclear Materials, 1979 Abstract The evolution of damage in a tow-swelling stainless steel under ion irradiation is examined. The influence of the presence of helium and its mode of injection upon dislocation evolution, phase instability, and swelling are investigated. Comparison of the response of the low-swelling alloy with that of a high-swelling alloy leads to some ...
Kenik, E.A.
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Nuclear Engineering and TechnologyThe swelling behavior of ferritic/martensitic steels (FC92–B/-N, HT9, and Gr.92) was investigated following 3.5 MeV Fe++ ion irradiation. Tested alloys were helium-pre-implanted up to the peak contents of 120 and 240 appm with He/dpa ratio of 1 appm/dpa ...
Myeongkyu Lee, Geon Kim, Sangjoon Ahn
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Quantifying helium-bubble swelling in RAFM steels using TEM and the surface-step method
Nuclear Materials and EnergyIn fusion-relevant environments where transmutation helium accumulates, He bubble formation can become a critical damage mechanism in reduced-activation ferritic/martensitic (RAFM) steels because it drives swelling and can degrade mechanical performance.
Sangeun Kim +6 more
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Nuclear Materials and Energy, 2023 The paper presents a detailed analysis of helium (He) bubble development in ODS-EUROFER steel caused by helium ion implantation in different regimes, with a particular attention to the role of the oxide nanoparticles in promoting the growth of He bubbles,
O.V. Emelyanova +6 more
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Ab initio investigation of properties and mobility of helium defects in La2Sn2O7 pyrochlore
Nuclear Materials and Energy, 2022 The accumulated helium atoms mitigate the physical properties of nuclear waste forms through long-time radionuclide decay and thus cause the safety concern. In this work, first-principles calculations were carried out to investigate the effects of helium
Xiaolong Li +8 more
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