Retention and diffusion of transmutation H and He atoms in Be<sub>12</sub>Ti: first-principles calculations

Zhu, Xiaolu; Wang, Canglong; Li, Jiajia; Zhang, Xingming; Deng, Hui; Duan, Wen-Shan; Yang, Lei

doi:10.1039/c8ra06768f

Cited by 16 publications

(9 citation statements)

References 40 publications

(28 reference statements)

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“…This work 1.658 1.450 1.568 3.949 Ref. 30 1.650 1.440 1.560 3.920 Ref. 41 1.600 1.430 1.530 4.100 in Fig.…”

Section: Stability Of Individual H and He Atoms In Be 12 Timentioning

confidence: 67%

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Aggregation of retained helium and hydrogen in titanium beryllide Be₁₂Ti: a first-principles study

Wang

Meng

et al. 2021

RSC Adv.

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“…This work 1.658 1.450 1.568 3.949 Ref. 30 1.650 1.440 1.560 3.920 Ref. 41 1.600 1.430 1.530 4.100 in Fig.…”

Section: Stability Of Individual H and He Atoms In Be 12 Timentioning

confidence: 67%

“…These results are consistent with the previous results. 30 There are four types of vacancies: V Be1 (Be1 vacancy), V Be2 (Be2 vacancy), V Be3 (Be3 vacancy) and V Ti (Ti vacancy), as shown…”

Section: Stability Of Individual H and He Atoms In Be 12 Timentioning

confidence: 99%

Aggregation of retained helium and hydrogen in titanium beryllide Be₁₂Ti: a first-principles study

Wang

Meng

et al. 2021

RSC Adv.

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“…For the low concentration of PCFs, the attenuation in the electromagnetic reflections was large as compare to the high concentration of the PCFs. [105] Activated carbon fibers (ACFs) can considerably enhance the reflection of the electromagnetic waves inside the composite for a larger distance. So, the use of ACFs is a potential way to enhance the microwave absorbency of a CFRP composite.…”

Section: Continuous Fiber Compositesmentioning

confidence: 99%

Stealth technology: Methods and composite materials—A review

et al. 2019

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Composites have revolutionized the field of aeronautics with its intriguing properties including high strength to weight ratio, low weight, chemical and weather resistance, flexible design and low cost of installation. Also, composites are used as radar absorbing materials (RAMs) in the manufacturing of stealth aircraft. Stealth technology (ST) uses a combination of RAMs and geometry to minimize the reflection of electromagnetic waves back to a radar system. In this review article, working principle and basic constituents of ST are examined along with RAMs types in the light of composites. Moreover, recently developed carbonaceous‐based polymer composites are critically discussed in terms of RAMs for stealth applications. A carbonaceous‐based composite provides a high flexibility for the design and properties control. Carbon black particles, carbon fibers, carbon nanotubes (CNTs), and graphene are used in composites to tailor the wave's absorption properties of a composite. Multilayered structures are also recommended by researchers to extend the absorption band for better stealth application. Optimized absorption properties were achieved from composites containing carbon fiber as filler. Also, CNTs are preferred due to its smaller loading (0.35%) to get conductivity equal to higher concentration of carbon black (20%), which consequently improves the ST. Enhanced electromagnetic absorption properties can be achieved form the graphene‐based RAMs along with incorporating the magnetic particles of different microstructures, particle size, and electromagnetic characteristics. This review will intensively cover the methodology of ST and different composites including carbon‐based composites as RAMs for the use in stealth technology.

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“…[7,8] Bare magnetite nanoparticles are susceptible to air oxidation and unstable, irreversible adsorption, and they are easily aggregated in aqueous systems with difficulty in complete desorption of compounds that are adsorbed on Fe 3 O 4 . The modified Fe 3 O 4 NPs have been extensively used for various applications [9] such as catalyst support, which is greatly applied in organic reactions because of easy recovery (using an external magnet). [10] Among different coating agents, SiO 2 shell around Fe 3 O 4 NPs (Fe 3 O 4 @SiO 2 ) has attracted more attention because the SiO 2 shell can protect bare Fe 3 O 4 NPs from decomposition and bring up a nontoxic, inert, eco-friendly, and hydrophilic surface with excellent active points for proper surface modification.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of benzo[b]xanthene‐triones and tetrahydrochromeno[2,3‐b]xanthene tetraones via three‐ or pseudo–five‐component reactions using Fe₃O₄@SiO₂/PEtOx as a novel, magnetically recyclable, and eco‐friendly nanocatalyst

Rahnamafar

Moradi

Khoobi

2020

Journal of Heterocyclic Chem

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In this study, poly(2‐ethyl‐2‐oxazoline) (PEtOx) immobilized on Fe3O4 nanoparticles (Fe3O4@SiO2/PEtOx) has been constructed as a new, heterogeneous, efficient, and recyclable nanocatalyst. The prepared nanocatalyst was characterized by Fourier transform infrared (FTIR), scanning electron microscopy (SEM), powder X‐ray diffraction (XRD), energy‐dispersive X‐ray spectroscopy (EDS) analysis, and vibrating‐sample magnetometer (VSM) techniques. Nanocatalyst was employed to synthesize benzo[b]xanthene‐triones and tetrahydrochromeno[2,3‐b]xanthene tetraones via one‐pot three‐ or pseudo–five‐component reaction between 2‐hydroxy‐1,4‐naphthoquinone or 2,5‐dihydroxy‐1,4‐benzoquinone, aldehyde, and dimedone or 1,3‐cyclohexanedione under reflux condition in ethanol. The catalyst could be easily separated and recycled several times without considerable loss of activity. Clean methodology, easy work‐up, mild reaction condition, short reaction time with good‐to‐excellent yields, and simple preparation of the catalyst are some advantages of the presented work.

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Retention and diffusion of transmutation H and He atoms in Be₁₂Ti: first-principles calculations

Abstract: In this work, first-principles calculations were conducted to gain insight into the retention and diffusion behavior of transmutation H and He atoms in Be12Ti.

Cited by 16 publications

References 40 publications

Aggregation of retained helium and hydrogen in titanium beryllide Be₁₂Ti: a first-principles study

Aggregation of retained helium and hydrogen in titanium beryllide Be₁₂Ti: a first-principles study

Stealth technology: Methods and composite materials—A review

Synthesis of benzo[b]xanthene‐triones and tetrahydrochromeno[2,3‐b]xanthene tetraones via three‐ or pseudo–five‐component reactions using Fe₃O₄@SiO₂/PEtOx as a novel, magnetically recyclable, and eco‐friendly nanocatalyst

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Retention and diffusion of transmutation H and He atoms in Be12Ti: first-principles calculations

Abstract: In this work, first-principles calculations were conducted to gain insight into the retention and diffusion behavior of transmutation H and He atoms in Be12Ti.

Cited by 16 publications

References 40 publications

Aggregation of retained helium and hydrogen in titanium beryllide Be12Ti: a first-principles study

Aggregation of retained helium and hydrogen in titanium beryllide Be12Ti: a first-principles study

Stealth technology: Methods and composite materials—A review

Synthesis of benzo[b]xanthene‐triones and tetrahydrochromeno[2,3‐b]xanthene tetraones via three‐ or pseudo–five‐component reactions using Fe3O4@SiO2/PEtOx as a novel, magnetically recyclable, and eco‐friendly nanocatalyst

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Retention and diffusion of transmutation H and He atoms in Be₁₂Ti: first-principles calculations

Aggregation of retained helium and hydrogen in titanium beryllide Be₁₂Ti: a first-principles study

Aggregation of retained helium and hydrogen in titanium beryllide Be₁₂Ti: a first-principles study

Synthesis of benzo[b]xanthene‐triones and tetrahydrochromeno[2,3‐b]xanthene tetraones via three‐ or pseudo–five‐component reactions using Fe₃O₄@SiO₂/PEtOx as a novel, magnetically recyclable, and eco‐friendly nanocatalyst