Ionic diffusion perpendicular to the grain boundaries
CONDUCTIVITY AND NEGATIVE-U FOR IONIC GRAIN-BOUNDARIES
... As has been emphasised in previous work (Stoneham and Sangster 1981, Catlow and Muxworthy 1978), the lattice relaxation and polarisation energies are important components, and meth[r] ...
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Grain Boundaries and Diffusion Phenomena in Severely Deformed Materials
... state of matter given by the condition that the room temperature corresponds to a relatively homologous temper- ature with respect to the melting point of the material, the generalized potential energy of the severely ...
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Fundamentals of grain boundaries and grain boundary migration
... a grain boundary property for a certain rotation axis ...the grain boundary inclination constant and only take into account the rotation angle ...Consequently, grain boundaries may be divided ...
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Detecting dopant diffusion enhancement at grain boundaries in multicrystalline silicon wafers with microphotoluminescence spectroscopy
... Figure 3a (dotted-blue curve). Besides the D3 and D4 peaks emitted from dislocations, the sub-GB also emits the D1 and D2 peaks due to decorating defects and impurities. Figures 3a and 3b compare the normalized and ...
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Density functional theory metadynamics of silver, caesium and palladium diffusion at β-SiC grain boundaries
... calculate diffusion coefficients for the ...the grain boundaries alone and the same window size was used for the metadynamics ...the diffusion coefficients, it is the only source of uncertainty ...
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Strain-softening behavior of wood under tension perpendicular to the grain
... The strain-softening behavior and fracture mechanism are closely related to each other when the tension is applied perpendicular to the grain. When an undamaged specimen is subjected to radial tensile ...
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The morphological characterisation of grains and grain boundaries
... 2.2.2.4. Lattice Strain Attempts have been made to use the diffusion of a Kikuchi pattern to determine the extent of lattice strain within a crystal. Specific work by Buchanan et al described a procedure to assess ...
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Topological descriptions of grain boundaries in graphene
... the grain boundary and perpendicular to the gray ...a grain boundary kink, and therefore effectively represents the presence of a kink in the grain ...
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Computational Study of Grain Boundaries and Nano-Reactive Materials
... Plotted in the Figure 7.3 is the time before the rapid rise (thermite initiation) in the simulation as a function of the pre-factor in the reaction Arrhenius rate for constant activation energy of 150kJ/mole and an ...
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A Bismuth Attack at Grain-Boundaries of Ceria-Based Electrolytes
... corrode grain-boundaries (GBs) of the GDC electrolyte, a commonly used intermediate-temperature electrolyte, causing significant ionic conductivity ...causing grain separation and thus ...
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Revealing Prior Austenite Grain Boundaries of 4340 Steel
... the diffusion of carbon from the supersaturated ...austenite grain nucleation will primarily take place along the carbide and ...austenite grain formation is amplified by utilizing elevated ...
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Grain Boundary Diffusion in Metals: Recent Developments
... nanocrystalline boundaries with subsequent outdiffusion into the grain interior, and c 3 ðy; tÞ ¼ q 5 expðq 6 yÞ represents the amount of tracer which diffuses along inter-agglomerate boundaries with ...
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Pipe and grain boundary diffusion of He in UO₂
... and grain boundaries on He diffusion in UO 2 ...and grain boundaries was investigated for the temperature range 2300 –3000 ...or grain boundaries. Further investigation ...
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Role of grain boundaries in the diffusion of hydrogen in nickel base alloy 600: Study coupling thermal desorption mass spectroscopy with numerical simulation
... of grain boundaries on the diffusion of hydrogen in nickel base alloy 600 serves as a first step towards the understanding of more complicated H- material interaction ...the diffusion of 2 H ...
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Splitting strength of beams loaded perpendicular to grain by dowel joints
... Like the Van der Put/Leijten model, the presented model is two-dimensional, i.e., it assumes that the fasteners are sufficiently stiff to ensure that crack propagation along the grain occurs simultaneously through ...
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Experimental study of locally loaded timber in compression perpendicular to the grain
... strength perpendicular to the grain was changed from a partial area to a full area loading test, strength values for softwood in EN 338 were significantly ...compression perpendicular to the ...
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Passivating Grain Boundaries in Polycrystalline CdTe
... ■ INTRODUCTION Polycrystalline CdTe has been demonstrated as a leading thin- fi lm solar cell material due to its low cost, ease of manufacturing, and high efficiency. 1−4 As a solar cell absorber, its extraordinary ...
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Electronic states of graphene grain boundaries
... tilt grain boundaries in graphene, expecting our results to be directly applicable to measurements on the surface of graph- ...the grain boundaries as seen on the surface of ...discuss ...
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Scattering theory of graphene grain boundaries
... We now formulate a theory of the n/n’ grain boundary junction based on the Hamiltonian model 458. presented in Sec[r] ...
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Miscibility and nanoparticle diffusion in ionic nanocomposites
... nanoparticle diffusion, for the first time in ionic nanocomposites containing small spherical nanoparticles up to high volume fraction, using a coarse grained model for nanoparticles and polymers by means ...
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