Article
Materials Science, Ceramics
Shanshan Xu, Ce Zheng, Yichun Bi, Qingping Mao, Hailong Qin, Yiming Qin, Xiaoqiang Li
Summary: Amosic-3 SiC/SiC composites were irradiated with 6 MeV Si ions at 300 degrees C to doses of 13 and 55 dpa, resulting in the loss of amorphous carbon packets and the growth of SiC grains. A mechanism based on grain growth theory was proposed to explain the relationship between carbon packet loss and SiC grain growth, with evidence from TEM images supporting the proposed mechanism.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Physics, Condensed Matter
G. Neelima, T. Mahesh, N. Manikanthababu, A. P. Pathak, V. Saikiran
Summary: The effects of swift heavy ion irradiation on the optical and structural properties of Germanium nanoparticles were studied, revealing a decrease in average size, amorphization at high fluence, and growth of smaller nanoparticles around larger ones under ion irradiation.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Materials Science, Ceramics
Jean-Marc Costantini, Joel Ribis
Summary: This study investigates the damage induced in 3C-SiC epilayers on a silicon wafer by 2.3-MeV Si ion irradiation for different fluences, and deduces the threshold energy densities and irradiation doses for dislocation loop formation and amorphous phase transformation. The role of electronic excitations on the damage recovery at high fluence is also addressed for both SiC and Si.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
E. Popov, L. Slavov, E. Demir, B. A. Abdurakhimov, A. S. Doroshkevich, O. A. Aliyev, S. H. Jabarov, A. H. Valizade, B. Mauyey, P. Horodek, K. Siemek, O. Samedov, M. N. Mirzayev
Summary: In this study, titanium carbide nano powders were irradiated with different fluencies of fast neutrons. The microstructure of the irradiated powders was analyzed using various methods, such as X-ray diffraction, Raman spectroscopy, and FTIR spectroscopic analysis. The results showed that there was no significant phase transition or amorphization in the irradiated TiC nano powders. However, the water molecules absorbed on the material surface were disintegrated under the influence of fast neutrons. Morphological analysis also confirmed the exceptional structural stability of titanium carbide to neutron irradiation.
Article
Materials Science, Multidisciplinary
Subing Yang, Yuki Nakagawa, Minako Kondo, Tamaki Shibayama
Summary: Anisotropic swelling in hexagonal alpha-SiC induced by irradiation was found to degrade the mechanical properties of the material. By introducing an anisotropic swelling condition in 4H-SiC using selected-area He+ irradiation, researchers observed an anisotropic distribution of defects which could potentially enhance the understanding of SiC's mechanical properties.
Article
Materials Science, Ceramics
G. Gutierrez, M. Bricout, F. Garrido, A. Debelle, L. Roux, C. Onofri
Summary: It was found that electronic energy dissipation has a significant acceleration effect on the formation and evolution of defects induced by nuclear energy deposition, and the magnitude of this acceleration depends on both the electronic energy loss level and the microstructure at the moment when the coupling occurs.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Beidi Chen, Nianyao Chai, Jinyong Zhang, Lin Ren, Weimin Wang, Fan Zhang, Xuewen Wang, Zhengyi Fu
Summary: In this paper, a novel approach to create hierarchical micro-nano surface structures on B4C using femtosecond laser irradiation is proposed. The results show that the phase structure of the sample changes after irradiation, and the wetting performance of the solution on B4C is significantly improved. This work provides a new idea for enhancing the wetting of metal/ceramic systems.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yongqi Zhu, Zhoutong He, Huilei Ma, Fanggang Liu, Alex Theodosiou, Andy Smith, Abbie Jones, Barry Marsden, Xingtai Zhou
Summary: In this study, ion beam irradiation was used to investigate the microstructure evolution of fine-grained graphite and ultrafine-grained graphite. The results showed that the Raman spectroscopy parameters of graphite can reflect the irradiation damage and annealing equilibrium, and distinguish the microstructure changes of different graphite types.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Antoine Jay, Olivier Hardouin Duparc, Jelena Sjakste, Nathalie Vast
Summary: The Raman spectrum of boron carbide under pressure is explained by the vibrations of (B11C) icosahedra and C-B-C chains, while the behavior of a broad Raman band at low frequency is attributed to the activation of the chain bending mode in flexured chains. The 270 cm-1 ambient-P mode is proposed as a fingerprint for identifying chain defects and deviations from rhombohedral symmetry in boron carbide.
Article
Materials Science, Ceramics
Shanshan Xu, Ce Zheng, Yichun Bi, Qingping Mao, Hailong Qin, Xiaoqiang Li
Summary: SiC/SiC composites are promising materials for nuclear systems, and SiC fibers play a critical role in the performance of these composites. This study investigated the microstructural evolution of Cansas-III SiC fibers under temperature effects using in-situ transmission electron microscopy. The results showed that at room temperature, the SiC fibers experienced heterogeneous amorphization and became completely amorphous at a certain dose. At temperatures above the critical temperature for crystalline-to-amorphous transition, the fibers underwent carbon packet disappearance and nano-grain growth. Possible mechanisms were discussed.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Y. Pipon, G. Victor, N. Moncoffre, G. Gutierrez, S. Miro, T. Douillard, O. Rapaud, N. Pradeilles, P. Sainsot, N. Toulhoat, M. Toulemonde
Summary: The behavior of boron carbide (B4C) under irradiation, particularly in relation to high electronic stopping powers (Se), has been extensively studied to predict its longevity in future nuclear fission reactors. Experimental results showed that under high Se values, significant surface damage and bulk amorphization occur in B4C, indicating the importance of understanding these effects for predicting material performance under irradiation.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
N. Sreelakshmi, S. Amirthapandian, G. R. Umapathy, C. David, S. K. Srivastava, S. Ojha, B. K. Panigrahi
Summary: The study found that damage caused by low energy ions can be effectively recovered by high energy Si+ ion irradiation, mainly due to ionization induced annealing of defects.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Materials Science, Ceramics
Zhixue Qu, Chuanjin Yu, Yitong Wei, Xiping Su, Aibing Du
Summary: This study quantitatively evaluated the contributions of various irradiation-induced defects in boron carbide and proposed a theoretical model without adjustable parameters based on phonon scattering theory. The model was validated using experimental data to predict the thermal conductivity variation under irradiation. Results suggest that substitutional defects and Frenkel defect pairs, rather than helium bubbles, play determining roles in the abrupt degradation of thermal conductivity during burnup.
JOURNAL OF ADVANCED CERAMICS
(2022)
Editorial Material
Physics, Condensed Matter
Helmut Werheit
Summary: In their paper, Sahu et al. use an outdated model of the boron carbide structure and ignore numerous studies on its complex structure and effects on properties. The Raman spectra used as reference are not suitable or reliable. The claimed agreement between calculated and real Raman spectra is not convincing.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Nanoscience & Nanotechnology
Jun Du, Kent Christian, Qirong Yang, Chawon Hwang, Eoin McAleer, Richard A. Haber
Summary: The study found that the stability of boron and silicon in boron carbide varies, with boron showing higher stability while silicon is in a metastable state under certain conditions. Dedoping of silicon may result in amorphization and degrade the ballistic performance of boron carbide.
SCRIPTA MATERIALIA
(2022)
Article
Physics, Applied
Jean-Marc Costantini, Sandrine Miro, Gaelle Gutierrez, Kazuhiro Yasuda, Seiya Takaki, Norito Ishikawa, Marcel Toulemonde
JOURNAL OF APPLIED PHYSICS
(2017)
Article
Materials Science, Multidisciplinary
Clement Ciszak, Michel Mermoux, Sandrine Miro, Gaelle Gutierrez, Frederic Lepretre, Ioana Popa, Karine Hanifi, Isabelle Zacharie-Aubrun, Laurent Fayette, Sebastien Chevalier
JOURNAL OF NUCLEAR MATERIALS
(2017)
Article
Instruments & Instrumentation
L. Beck, P. C. Gutierrez, S. Miro, F. Miserque
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2017)
Article
Materials Science, Multidisciplinary
Jean-Marc Costantini, Sandrine Miro, Gerald Lelong, Maxime Guillaumet, Marcel Toulemonde
PHILOSOPHICAL MAGAZINE
(2018)
Article
Physics, Applied
Jean-Marc Costantini, Sandrine Miro, Nadia Touati, Laurent Binet, Gilles Wallez, Gerald Lelong, Maxime Guillaumet, William J. Weber
JOURNAL OF APPLIED PHYSICS
(2018)
Article
Materials Science, Multidisciplinary
R. Mohun, L. Desgranges, A. Canizares, N. Raimboux, F. Duval, R. Omnee, C. Jegou, S. Miro, P. Simon
JOURNAL OF NUCLEAR MATERIALS
(2018)
Article
Instruments & Instrumentation
G. Gutierrez, C. Onofri, S. Miro, M. Bricout, F. Lepretre
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2018)
Article
Instruments & Instrumentation
S. Pellegrino, P. Trocellier, L. Thome, S. Miro, J-M. Costantini, E. Jouanny
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2019)
Article
Materials Science, Multidisciplinary
Valentin Kerleguer, Christophe Jegou, Laurent De Windt, Veronique Broudic, Gauthier Jouan, Sandrine Miro, Florent Tocino, Christelle Martin
JOURNAL OF NUCLEAR MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Y. Pipon, G. Victor, N. Moncoffre, G. Gutierrez, S. Miro, T. Douillard, O. Rapaud, N. Pradeilles, P. Sainsot, N. Toulhoat, M. Toulemonde
Summary: The behavior of boron carbide (B4C) under irradiation, particularly in relation to high electronic stopping powers (Se), has been extensively studied to predict its longevity in future nuclear fission reactors. Experimental results showed that under high Se values, significant surface damage and bulk amorphization occur in B4C, indicating the importance of understanding these effects for predicting material performance under irradiation.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Chemistry, Physical
Lola Sarrasin, Sandrine Miro, Christophe Jegou, Magaly Tribet, Veronique Broudic, Caroline Marques, Sylvain Peuget
Summary: The formation of studtite was studied using isotopic labeling during oxidative dissolution of a MIMAS MOX fuel disk in aerated water enriched in O-18, showing different enrichments of O-18 in the uranyl and peroxide bonds of studtite. Additionally, the influence of MOX MIMAS heterogeneous microstructure and chemistry was observed with preferential dissolution of UO2 grains and stability of Pu-rich areas during the experiment.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
C. Gillet, S. Szenknect, M. Tribet, S. Miro, T. Charpentier, M. Odorico, S. Peuget
Summary: This study investigates the coupling effect between electron irradiation and Au irradiation on the structure and properties of ISG glass. The experimental results show that the changes induced by Au irradiation are similar to those induced by sequential irradiation, while electron irradiation has a smaller impact on ISG glass. Furthermore, the hardness and density changes of ISG glass are similar to SON68 glass under similar irradiation conditions.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
S. Miro, N. Sellami, P. Chevreux, G. Jouan, M. Tribet, C. Jegou, I. Bardez-Giboire, S. Peuget
Summary: The evolution of a 241 Am doped aluminoborosilicate glass-ceramic under alpha-decay radiation was investigated. The excess of solubility limit led to the formation of apatite-like silicate crystals with a hexagonal morphology. Structural and microstructural changes were observed over 8 years, including radiation-induced amorphization and modification of connectivity in the crystals. The transformation from crystalline to amorphous state was accompanied by volume increase and decohesion from the glassy matrix.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Sylvain Peuget, Magaly Tribet, Sarah Mougnaud, Sandrine Miro, Christophe Jegou
NPJ MATERIALS DEGRADATION
(2018)
Article
Physics, Applied
Jean-Marc Costantini, Sandrine Miro, Olivier Pluchery
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2017)
Article
Materials Science, Multidisciplinary
Liuming Wei, Jingwen Li, Yonggang Li, Qirong Zheng, Fan Cheng, Chuanguo Zhang, Jingyu Li, Gaofeng Zhao, Zhi Zeng
Summary: This study investigates the influence of He-V complexes on H behaviors on different W surfaces using DFT calculations. The results show that H dissolution is most difficult but H trapping is easiest on the W (110) surface, while the opposite is true on the W (111) surface. Moreover, the presence of He-V complexes increases the difficulty of H diffusion from bulk to surface and desorption.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yan Meng, Song Zeng, Chen Chen, Chaowen Zhu, Huahai Shen, Xiaosong Zhou, Xiaochun Han
Summary: The characteristics of magnetron sputtered Cr coatings vary with different temperature, bias voltage, and pressure. Coatings with random orientation, good crystallinity, and small grain size exhibit favorable oxidation behavior, while coatings with strong (200) texture, poor crystallinity, and large grains have many intrinsic defects that are detrimental to the protection property of the Cr coatings.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xinyuan Xu, Zefeng Yu, Wei-Ying Chen, Aiping Chen, Arthur Motta, Xing Wang
Summary: This study presents an automated approach for characterizing grain morphology in TEM images recorded during ion irradiation. By combining a machine learning model and a computer vision algorithm, comparable results to human analysis can be achieved with significantly reduced analysis time. Researchers can train their own models following the procedures described in this study to automate grain morphology analysis of their own TEM images.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Shihao Wu, Dong Wang, Yapei Zhang, Koji Okamoto, Marco Pellegrini, Wenxi Tian, Suizheng Qiu, G. H. Su
Summary: The oxidation and degradation mechanisms of Cr coating on Zr alloy cladding under high temperature steam atmosphere are summarized, and a mathematical analysis model is established to predict the changes in coating thickness. The model is applied in the analysis of structure evolution under different conditions.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
V. Diaz-Mena, J. de Prado, M. Roldan, I. Izaguirre, M. Sanchez, M. Rieth, A. Urena
Summary: The brazeability of a cupronickel alloy was evaluated as a filler alloy for high-temperature joining of tungsten to steel. The study investigated the brazing conditions and the impact of the selected filler on the joint quality using numerical software. The results showed different metallurgical interactions and diffusion phenomena between the filler alloy and the base materials at different temperatures. The study emphasized the importance of selecting a suitable filler to mitigate residual stresses in the joints.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Pengcheng Zhu, Yajie Zhao, Yan-Ru Lin, Jean Henry, Steven J. Zinkle
Summary: This study investigates the effect of heavy-ion irradiation on radiation hardening in high-purity binary alloy Fe18Cr. Nanoindentation testing and high-quality TEM imaging were conducted to extract hardness and microstructure information. The strength factor was accurately calculated based on the detailed TEM characterization of irradiated microstructures, and a refined hardening superposition method was applied to quantify the mechanical properties of ion-irradiated materials.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Bin Wu, Haixia Ning, Hanzhen Zhu, Jianjun Chen, Kang Wang, Daiyu Zhang, Fu Wang, Qilong Liao
Summary: This study discusses the effects of ZrO2 and B2O3 on the phase composition and properties of SAP-based glass-ceramics. The results show that ZrO2 addition improves the formation of NZP phase while restricting the crystallization of AlPO4 phases. The correct ratios of ZrO2 and B2O3 allow only the formation of NZP phase within the SAP glass.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Hwasung Yeom, Greg Johnson, Benjamin Maier, Tyler Dabney, Kumar Sridharan
Summary: Cr-Nb bilayer coatings were developed using cold spray deposition to improve the limiting operational temperature of Cr-coated Zr-alloy system. The coatings exhibited outstanding oxidation resistance at high temperatures and formed continuous intermetallic compound layers at the interfaces.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Padhraic L. Mulligan, Andrew T. Nelson, Chad M. Parish, Patrick A. Champlin, Xiang Chen, Daniel Morrall, Jason M. Harp
Summary: Environmental barrier coatings are being developed to reduce oxidation and embrittlement in Zr-based materials. Chromium nitride is a candidate for this application, but understanding its impact on irradiation-induced creep and microstructure is critical.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Dexuan Yan, Xinlei Cao, Ke Shen
Summary: This study investigated the purification mechanism of polycrystalline graphite by comparing IG-11 graphite with IG-110 nuclear grade graphite. The analysis revealed that metallic impurities in IG-11 were primarily segregated within graphite porosities, while IG-110 demonstrated a significant reduction in impurities. This research contributes to the development of innovative graphite purification techniques for greater purity and stronger oxidation resistance.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Wei Xu, Wei Peng, Lei Shi, Qi Sun
Summary: This paper investigates the oxidation and shape evolution of matrix graphite in high temperature gas-cooled reactors during air-ingress accidents. A reaction kinetics model is established and computational fluid dynamics with a dynamic mesh method is used to simulate the oxidation process. The results show that the geometric shape of graphite changes significantly with increasing flow rate, and the graphite pebbles tend to form a structure with a narrow front and wide tail.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Allison Harward, Casey Elliott, Michael Shaltry, Krista Carlson, Tae-Sic Yoo, Guy Fredrickson, Michael Patterson, Michael F. Simpson
Summary: This paper investigates the hygroscopic properties of eutectic LiCl-KCl absorbed into zeolite-4A. The study finds that water absorption and corrosion worsen with increasing salt loading. It also suggests that the salt can be stored in a non-inert atmosphere for a certain period of time.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Takaaki Koyanagi, Xunxiang Hu, Christian M. Petrie, Gyanender Singh, Caen Ang, Christian P. Deck, Weon-Ju Kim, Daejong Kim, James Braun, Yutai Katoh
Summary: This study provides critical experimental data on the effects of irradiation on the hermeticity of SiC composite cladding, finding that irradiation can cause a decrease in hermeticity and cracking, and coating the outer surface can mitigate the cracking issue.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
S. Krat, A. Prishvitsyn, Yu. Gasparyan
Summary: This study proposes a probabilistic and diffusion-based model to describe the co-deposition of multiple hydrogen isotopes with slowly grown metal layers. The model calculates the relative concentrations of different hydrogen isotopes in the co-deposited metal layers. It is found that if hydrogen isotopes have different detrapping energies, only the isotope with the highest detrapping energy shows a monotonic decrease in concentration with deposition temperature. Furthermore, the study evaluates the uncertainty of tritium concentration in the co-deposited layer based on the uncertainty in detrapping energy of tritium and deuterium, predicting a >10% tritium concentration uncertainty for a 0.01 eV difference.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Tijo Vazhappilly, Arup Kumar Pathak
Summary: This study investigates the effect of Ce atom substitution in UO2 on its thermophysical properties using density functional theory. The results show that the Ce substitution levels and the oxidation state of Ce/U atoms strongly influence the band structure and specific heat capacity of the UO2 lattice. These findings provide important insights into the fuel properties of UO2 under reactor conditions.
JOURNAL OF NUCLEAR MATERIALS
(2024)