Structural and electronic properties of grain boundaries in graphite: Planes of periodically distributed point defects [PDF]
, 2008 We report on scanning tunneling microscopy and spectroscopy of grain boundaries in highly oriented pyrolytic graphite. Grain boundaries showed a periodic structure and an enhanced charge density compared to the bare graphite surface.
Cervenka, J., Flipse, C. F. J.
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Palladium Membrane with High Density of Large-Angle Grain Boundaries to Promote Hydrogen Diffusivity
Membranes, 2022 A higher density of large-angle grain boundaries in palladium membranes promotes hydrogen diffusion whereas small-angle grain boundaries suppress it. In this paper, the microstructure formation in 10 µm thick palladium membranes is tuned to achieve a ...
Efi Hadjixenophontos +8 more
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Radiation induced grain boundary segregation in ferritic/martensitic steels
Nuclear Engineering and Technology, 2020 The radiation induced segregation of Cr at grain boundaries (GBs) in Ferritic/Martensitic steels was modeled assuming vacancy and interstitialcy diffusion mechanisms.
L.D. Xia +6 more
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Grain-boundary topological phase transitions [PDF]
Proceedings of the National Academy of Sciences, 2020 Significance We reveal the existence of a topological phase transition (Kosterlitz–Thouless type) in grain boundaries (GBs)—important internal surfaces in crystalline materials. GB dynamics are controlled by the formation/migration of line defects (disconnections) with dislocation and step character. Below the GB KT transition, disconnections
Kongtao Chen +2 more
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Effect of serrated grain boundary on stress corrosion cracking of Alloy 600
Nuclear Engineering and Technology, 2018 The effect of a serrated grain boundary on stress corrosion cracking (SCC) of Alloy 600 was investigated in terms of improvement of SCC resistance. Serrated grain boundaries and straight grain boundaries were obtained by controlled heat treatment.
H.P. Kim +5 more
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Journal of Materials Research and Technology, 2022 The segregation sequence of phosphorus and the influence on impact toughness of GH984G alloy, for the application of advanced ultra-super critical (A-USC) power plant, were studied during long-term thermal exposure at 700 °C.
Yunsheng Wu +4 more
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Strongly coupled artificial bulk HTS grain boundaries with high critical current densities [PDF]
, 2007 A multi-seeding process has been developed to fabricate single Y-Ba-Cu-O (YBCO) grains containing strong artificial grain boundaries. Multi-seeding of heterogeneous YBCO grains with controlled orientation was achieved using large Sm-Ba-Cu-O (SmBCO ...
Cardwell, DA +3 more
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2D materials for conducting holes from grain boundaries in perovskite solar cells
Light: Science & Applications, 2021 Grain boundaries in organic–inorganic halide perovskite solar cells (PSCs) have been found to be detrimental to the photovoltaic performance of devices.
Peng You +12 more
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Metavalent bonding impacts charge carrier transport across grain boundaries
Nano Research Energy, 2023 Understanding the mechanisms underpinning the charge carrier scattering at grain boundaries is crucial to design thermoelectrics and other electronic materials.
Yuan Yu, Matthias Wuttig
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Helium bubble formation in ultrafine and nanocrystalline tungsten under different extreme conditions [PDF]
, 2015 We have investigated the effects of helium ion irradiation energy and sample temperature on the performance of grain boundaries as helium sinks in ultrafine grained and nanocrystalline tungsten.
A. Hassanein +48 more
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