Superior radiation tolerance via reversible disordering–ordering transition of coherent superlattices

Du, Jinlong; Jiang, Suihe; Cao, Peiyu; Xu, Chuan; Wu, Yuan; Chen, Huaqiang; Fu, Engang; Liu, Xiongjun

doi:10.1038/s41563-022-01260-y

Cited by 47 publications

(12 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No radiation induced morphologies or structures of the CNT are observed. The radiation damage level can be estimated by the widely used displacement per atom (DPA) (29)(30)(31), and the DPA value of carbon substrate sample under 3 MeV C + selfirradiation with fluence of 1×10 15 ions cm -2 is 0.0034 dpa (Fig S3), which is too low to change the morphology of the CNT according to previous publications (32)(33)(34). It can be further confirmed through Raman measurements, and the disorder and graphene peak intensity ratio (ID/IG) of Raman spectrum for the CNTs samples after ion irradiation (ID/IG = 0.7880) was little increased with that before ion irradiation (ID/IG = 0.5371) , with the calculated inter defect intensity little increased (35).…”

Section: Resultsmentioning

confidence: 99%

Measuring and Manipulating Defect-induced Micro-electronic Fields at Metal-Support Interface

Wei

Zhang

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Tunning the micro-electric field at the metal-support interface offers great opportunities for developing heterogeneous catalysts with high stability, selectivity, and activity. However, the role of carbon support defects plays in manipulating the charge transfer process and activating the interfacial perimeter sites is still obscure due to the absence of direct experimental evidence. Herein, we develop a top-down method to synthesize a metal-defective-support model via both heavy ion irradiation and chemical impregnation. The interface electric field distribution, together with the magnitude of charge density distribution were reconstructed and visualized in the real space via four-dimension scanning transmission electron microscopy (4D-STEM).Combining the density functional theory (DFT) calculations, we further reveal the carbon topological defects induced atomic scale polarization mechanism is responsible for the reversed charge transfer behavior and demonstrate that the metal-support interaction could be precisely manipulated through controlling support defects density. This work offers new insights for understanding defects’ function of elevating the catalyst stability and performance, and facilitating the future development of advanced catalysts with high activity.

show abstract

Section: Resultsmentioning

confidence: 99%

Measuring and Manipulating Defect-induced Micro-electronic Fields at Metal-Support Interface

Wei

Zhang

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…[138] More recently, Fu and Lu et al have reported a counterintuitive strategy to achieve exceptionally high radiation tolerance at high temperatures. [139] By enabling reversible local disordering-ordering transition of the introduced superlattice nanoprecipitates in metallic materials, it has been particularly demonstrated in martensitic steel containing a high density of B2-ordered Ni(Al, Fe) superlattice nanoprecipitates, no void swelling was detected even after ultrahigh-dose radiation damage at high temperature. Under high-temperature irradiation conditions, traditional alloy materials accumulate radiation damage at the beginning of irradiation, and the radiation swelling is not obvious.…”

Section: Dispersion Of Nanoparticles In Steelsmentioning

confidence: 99%

Recent Progress on Interfaces in Nanomaterials for Nuclear Radiation Resistance

Jiang

et al. 2022

ChemNanoMat

View full text Add to dashboard Cite

Interfaces including grain boundaries and heterophase interfaces could withstand the radiation damage via providing sites for trapping the defects. With the urgent demand for high radiation-tolerance nanostructured materials, exploration of the structural properties, especially the role of the interfaces on the radiation response in the nanomaterials, is of significant essentialness in developing the design of new radiation-resistant materials. Herein, the recent progress and development of two main kinds of interfaces, namely the grain boundaries in nanocrystalline and the hetero-phase interfaces in nanolayered materials and nano-composites, in nanostructured materials that are designed for radiation tolerance are summarized. In addition, the radiation response and resistant mechanism under irradiation conditions of the nanocrystalline materials like metals, single-phase alloys, and ceramics, as well as the nanocomposites like nanolayered metals, nanolayered ceramics, metal-carbon nanocomposite, and nanoparticle dispersed steels, are reviewed. Finally, challenges and perspectives are proposed to offer advice for the development of radiation resistance nanomaterials.

show abstract

“…Another common strategy has been designing materials with high sink strength for absorbing defects generated during irradiation. Nanostructured materials such as oxide dispersion-strengthened (ODS) steels, alloys with fine precipitates such as Ti-modified stainless steel, nanolayered composites, and nanograined materials have demonstrated excellent radiation-resistant properties compared to conventional materials. ,,− In these materials, the presence of a high density of point defect sinks in the form of grain boundaries and phase interfaces has been ascribed to the increased radiation tolerance . However, these materials may pose some processing and manufacturing challenges through conventional methods for making engineering scale components. , …”

Section: Introductionmentioning

confidence: 99%

Nanoprecipitates to Enhance Radiation Tolerance in High-Entropy Alloys

Kombaiah

Zhou

Jin

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The growth of advanced energy technologies for power generation is enabled by the design, development, and integration of structural materials that can withstand extreme environments, such as high temperatures, radiation damage, and corrosion. High-entropy alloys (HEAs) are a class of structural materials in which suitable chemical elements in four or more numbers are mixed to typically produce single-phase concentrated solid solution alloys (CSAs). Many of these alloys exhibit good radiation tolerance like limited void swelling and hardening up to relatively medium radiation doses (tens of displacements per atom (dpa)); however, at higher radiation damage levels (>50 dpa), some HEAs suffer from considerable void swelling limiting their near-term acceptance for advanced nuclear reactor concepts. In this study, we developed a HEA containing a high density of Cu-rich nanoprecipitates distributed in the HEA matrix. The Cu-added HEA, NiCoFeCrCu 0.12 , shows excellent void swelling resistance and negligible radiation-induced hardening upon irradiation up to high radiation doses (i.e., higher than 100 dpa). The void swelling resistance of the alloy is measured to be significantly better than NiCoFeCr CSA and austenitic stainless steels. Density functional theory simulations predict lower vacancy and interstitial formation energies at the coherent interfaces between Cu-rich nanoprecipitates and the HEA matrix. The alloy maintained a high sink strength achieved via nanoprecipitates and the coherent interface with the matrix at a high radiation dose (∼50 dpa). From our experiments and simulations, the effective recombination of radiation-produced vacancies and interstitials at the coherent interfaces of the nanoprecipitates is suggested to be the critical mechanism responsible for the radiation tolerance of the alloy. The materials design strategy based on incorporating a high density of interfaces can be applied to high-entropy alloy systems to improve their radiation tolerance.

show abstract

Superior radiation tolerance via reversible disordering–ordering transition of coherent superlattices

Cited by 47 publications

References 58 publications

Measuring and Manipulating Defect-induced Micro-electronic Fields at Metal-Support Interface

Measuring and Manipulating Defect-induced Micro-electronic Fields at Metal-Support Interface

Recent Progress on Interfaces in Nanomaterials for Nuclear Radiation Resistance

Nanoprecipitates to Enhance Radiation Tolerance in High-Entropy Alloys

Contact Info

Product

Resources

About