Surface relaxation measurements of the surface energy of the (110) and (100) surfaces of iron-3% silicon

Mills, B.; Leak, G. M.

doi:10.1016/0001-6160(68)90015-1

Cited by 10 publications

(1 citation statement)

References 21 publications

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“…For decades, Eq. (1) was successfully used for determining of surface diffusivities [2] and surface energies [3] of solids. In thin polycrystalline films there are two main factors that complicate the outlined above description of surface smoothening given by the classical Mullins model:…”

Section: Introductionmentioning

confidence: 99%

Enhanced Diffusional Self-Healing of Polycrystalline Thin Films

Rabkin

Klinger

2005

DDF

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We considered the flattening of perturbed surface of a thin stress-free polycrystalline film with columnar microstructure deposited on rigid substrate. We show that the mass transport along the film/substrate interface and along the grain boundaries significantly contributes to the overall rate of surface flattening of the film. The diffusion along the film/substrate interface and along the grain boundaries is driven by the capillary stresses in the film. Using the approximation of small surface slopes, we calculated the distribution of capillary stresses in the film, and derived an explicit expression for the temporal behavior of the film topography. The initial distribution of the capillary stresses rapidly relaxes to the steady-state one that does not allow the accumulation of bending strain in the film. For the films with passivated or contaminated surfaces exhibiting reduced surface diffusivity the interfacial and grain boundary diffusion play a leading role in kinetics of surface flattening. The flattening process can be accelerated in this case by several orders of magnitude. The results of our work can be helpful in design of thin films and coatings with enhanced selfhealing capabilities.

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Section: Introductionmentioning

confidence: 99%