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Vacancy diffusion

Submitted by Zhigang Suo on
ES 242r
Spring 2004
Evolving Small Structures

Cavity Growth Is Caused by a Series of Tiny Effects

  • A tiny fraction of lattice sites are vacant.
  • The tensile stress increases the vacancy concentration at the external surface by a tiny fraction.
  • The tiny nonunifomity in the vacancy concentration drives diffusion.
  • A tiny fraction of vacancies change site, by an atomic distance.
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L03 Vacancy Diffusion.pdf 50.25 KB