Electron microscopy
 
Effect of Grain Boundary on Electrical Properties
- Practical Electron Microscopy and Database -
- An Online Book -
Microanalysis | EM Book                                                                                   http://www.globalsino.com/EM/        

This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.
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From intermetallics, the metallic elements in such materials have unequal electronegativities so that their lattices have lower electron densities than metals. Therefore, electron depletion may occur at the boundary and would also reduce the boundary's cohesive strength.

In polycrystalline ceramics, grain boundaries usually act as barriers for the cross-transport of charges. Due to the segregation of charged cations, a strong reduction of the leakage current across the boundaries is induced by the space charge depletion region.

 

 

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