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Journal of Materials Science

, Volume 41, Issue 14, pp 4466–4476 | Cite as

Stress fields at boundaries between contacting particles

  • Anders ThölénEmail author
Article

Abstract

Small metal particles in the size range 0.1 μm sometimes exhibit stress fringes near the contacting boundary as observed in the transmission electron microscope. The possible causes for these stress fields are investigated in terms of different models: adhesion, external forces (possibly magnetic), dislocations in the grain boundary area or “squeezed-in” extra material in the grain boundary zone. In all these cases high stresses are expected near the contacting area. Adhesion between particles becomes more apparent the smaller they are and is thus very important in nanotechnology.

Keywords

Stress Field Magnetic Force Rayleigh Wave Particle Radius Dislocation Loop 

Notes

Acknowledgement

The Swedish Research Council is gratefully thanked for their support of this work. Dr. P.W. Karlsson is thanked for helpful comments.

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  1. 1.Department of Applied Physics, Microscopy and MicroanalysisChalmers University of TechnologyGöteborgSweden

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