Initial investigation of B4C–TiB2 composites as neutron absorption material for nuclear reactors

Wang, Ji; Ren, Donglou; Chen, LeiLei; Man, Guian; Zhang, Houyuan; Zhang, Hongpeng; Luo, Laihui; Li, Weiping; Pan, Yanbo; Gao, Peifeng; Zhu, Yabin

doi:10.1016/j.jnucmat.2020.152275

Cited by 14 publications

(12 citation statements)

References 35 publications

(45 reference statements)

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“…It was also observed that the polished target possessed a flat surface without cracks and porosity ( Figure 1 b), suggesting that the preparation method could completely meet the target demand of magnetron sputtering. In comparison with the commonly used spark plasma sintering method [ 30 ], the melting method could facilitate mass transport and thus improve the uniformity of the composition [ 31 , 32 , 33 ]. In addition, crystallization from a melt is generally exempt from porosity.…”

Section: Resultsmentioning

confidence: 99%

Structure, Morphology, and Photoelectric Performances of Te-Sb2Se3 Thin Film Prepared via Magnetron Sputtering

et al. 2020

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Antimony selenide (Sb2Se3) has been widely investigated as a promising absorber material for photovoltaic devices. However, low open-circuit voltage (Voc) limits the power conversion efficiency (PCE) of Sb2Se3-based cells, largely due to the low-charge carrier density. Herein, high-quality n-type (Tellurium) Te-doped Sb2Se3 thin films were successfully prepared using a homemade target via magnetron sputtering. The Te atoms were expected to be inserted in the spacing of (Sb4Se6)n ribbons based on increased lattice parameters in this study. Moreover, the thin film was found to possess a narrow and direct band gap of approximately 1.27 eV, appropriate for harvesting the solar energy. It was found that the photoelectric performance is related to not only the quality of films but also the preferred growth orientation. The Te-Sb2Se3 film annealed at 325 °C showed a maximum photocurrent density of 1.91 mA/cm2 with a light intensity of 10.5 mW/cm2 at a bias of 1.4 V. The fast response and recovery speed confirms the great potential of these films as excellent photodetectors.

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Section: Resultsmentioning

confidence: 99%

Structure, Morphology, and Photoelectric Performances of Te-Sb2Se3 Thin Film Prepared via Magnetron Sputtering

et al. 2020

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“…These metamaterial or nanomaterial absorbers possess extraordinary performances such as ultra-broadband light absorption, polarization-independence and strong tolerance for incident angle. More importantly, thanks to the structural and optical robustness at elevated temperature, the absorbers based on refractory materials have shown impressive potential in diverse fields such as solar energy harvesting [109,151], photodetection [191,192], furnaces [193], nuclear reactor [194,195], thermal imaging [33,152] and other typical applications [196]. Although the applications are still at their early stages of development, in the following subsections, we outline some potential applications in order to provide some directions for future research.…”

Section: Applications Of Refractory Materials Based Perfect Absorbersmentioning

confidence: 99%

Refractory materials and plasmonics based perfect absorbers

et al. 2021

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In the past decades, metamaterial light absorbers have attracted tremendous attention due to their impressive absorption efficiency and significant potential for multiple kinds of applications. However, the conventional noble metals based metamaterial and nanomaterial absorbers always suffer from the structural damage by the local high temperature resulting from the strong plasmonic photo-thermal effects. To address this challenge, intensive research has been conducted to develop the absorbers which can realize efficient light absorption and simultaneously keep the structural stability under high temperatures. In this review, we present detail discussion on the refractory materials which can provide robust thermal stability and high performance for light absorption. Moreover, promising theoretical designs and experimental demonstrations that possess excellent features are also reviewed, including broadband strong light absorption, high temperature durability, and even the easy-to-fabricate configuration. Some applications challenges and prospects of refractory materials based plasmonic perfect absorbers are also introduced and discussed.

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“…Compared with the pure B 4 C ceramics prepared by the same method, the hardness of the composite ceramics decreased, but the flexural strength and fracture toughness increased significantly. Ren et al [ 16 , 17 ] used NaCl–KCl as a molten salt medium to prepare the composite powder with Al 3 BC and TiB 2 coating uniformly on the surface of B 4 C particles. Due to the conductivity of boride coating, the material transportation is dynamically enhanced through SPS sintering.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Mechanical Properties of Composites with Surface Modified B4C for Precision Machining

et al. 2023

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In order to solve the problem of difficult sintering and high brittleness of B4C-based ceramics, B4C@ZrB2-TiB2 composite powder was synthesized by molten salt method, and B4C–(Zr, Ti)B2 composite ceramics were successfully prepared by spark plasma sintering. The effects of different raw material ratios on the composition, microstructure, and mechanical properties of the prepared composite ceramics were characterized by XRD, XPS, SEM, and TEM. The results show that ZrB2 and TiB2 were grown on the surface of B4C by template mechanism to form a dense nanocrystalline coating, and the original surface of B4C was exposed gradually with the decrease of the ratio of metal powder. When the composite powders were sintered at 1700 °C, ZrB2 and TiB2 formed a solid solution, which can refine grains and improve strength. When the raw material ratio is n(B4C): n(Zr): n(Ti) = 12:1:1, the composite ceramics have excellent comprehensive properties, the Vickers hardness reaches 41.2 GPa.

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Initial investigation of B4C–TiB2 composites as neutron absorption material for nuclear reactors

Cited by 14 publications

References 35 publications

Structure, Morphology, and Photoelectric Performances of Te-Sb2Se3 Thin Film Prepared via Magnetron Sputtering

Structure, Morphology, and Photoelectric Performances of Te-Sb2Se3 Thin Film Prepared via Magnetron Sputtering

Refractory materials and plasmonics based perfect absorbers

Improvement of Mechanical Properties of Composites with Surface Modified B4C for Precision Machining

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