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Physical Chemistry, Chemical Physics - PCCP, 2017
Although the bulk conductivity of lithium ion conducting Li3xLa0.67-xTiO3 electrolytes reaches the level of 10-3 S cm-1, the grain boundary conductivity is orders of magnitude lower; the origin of the low grain boundary conductivity should be thoroughly ...
Jian-Fang Wu, Xin Guo
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Although the bulk conductivity of lithium ion conducting Li3xLa0.67-xTiO3 electrolytes reaches the level of 10-3 S cm-1, the grain boundary conductivity is orders of magnitude lower; the origin of the low grain boundary conductivity should be thoroughly ...
Jian-Fang Wu, Xin Guo
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Grain Boundary Segregation. Grain Boundary Diffusion
1985In polycrystalline materials, grain boundaries differ from the monocrystalline bulk by : i) their structure, ii) their electronic properties, iii) their chemical composition, iv) the atomic mobility of all the species.
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The role of grain boundary dislocations in grain boundary sliding
Acta Metallurgica, 1973Abstract Dislocation models for grain boundary sliding have generally invoked lattice dislocations moving along the boundary as the basic mode of deformation. This paper considers the possibility of structural dislocations accounting for the same phenomenon.
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, 2017
Skutterudite materials are widely considered for thermoelectric waste heat recovery. While the skutterudite structure effectively scatters the high frequency phonons, grain-boundary engineering is needed to further reduce the thermal conductivity beyond ...
Peng‐an Zong +7 more
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Skutterudite materials are widely considered for thermoelectric waste heat recovery. While the skutterudite structure effectively scatters the high frequency phonons, grain-boundary engineering is needed to further reduce the thermal conductivity beyond ...
Peng‐an Zong +7 more
semanticscholar +1 more source
Grain Boundary Network: Grain Boundary Texture
2012If we try to understand the role of grain boundary networks in polycrystal properties, in order to promote special behaviours of the material, the first task is to establish then to control the grain boundary organization in that network. This is the objective of numerous studies dealing with the determination of the grain boundary characteristic ...
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Novel Approaches to the Thermodynamis of Grain Boundaries and Grain Boundary Junctions
Materials Science Forum, 2007Three recent investigations in the field of thermodynamics of grain boundaries and grain boundary junctions are presented. 1. The grain boundary excess free volume (BFV) along with the surface tension belongs to the major thermodynamic properties of grain boundaries.
Günter Gottstein, Lasar S. Shvindlerman
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Direct imaging of atomistic grain boundary migration
Nature Materials, 2021Jiake Wei +6 more
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, 2017
Reliable modeling of the deformation of rocksalt under the very low strain rates characterizing long term engineering conditions or natural halokinesis requires extrapolation of experimentally -derived flow laws to rates much lower than those attainable ...
J. Urai, C. Spiers
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Reliable modeling of the deformation of rocksalt under the very low strain rates characterizing long term engineering conditions or natural halokinesis requires extrapolation of experimentally -derived flow laws to rates much lower than those attainable ...
J. Urai, C. Spiers
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On the chemistry of grain boundary segregation and grain boundary fracture
Metallurgical Transactions A, 1990This paper considers the problem of impurity segregation in metals and the effect of these impurities on grain boundary cohesion. The primary goal of this paper is to provide a physical model that will allow us to think about these two processes. We describe both of them in chemical terms.
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Retardation Effect of Grain Boundary Segregation on Grain Boundary Diffusion
Defect and Diffusion Forum, 2006The effect of grain boundary segregation (GBS) on grain boundary diffusion (GBD) is analyzed in frame of the new model. This model supposes the formation of the specific “nuclei” in a grain boundary (GB) solid solution. Their composition is close to that of the nearest phase in grain in equilibrium with solid solution in grain.
A. O. Rodin +2 more
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