Spatial correlations in symmetric and asymmetric bicontinuous structures

Spatial correlations of interfacial curvature are compared for symmetric and asymmetric two-phase mixtures produced following spinodal decomposition as given by a numerical solution to the Cahn–Hilliard equation in three dimensions. By calculating radial distribution functions of the density of inte...

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Veröffentlicht in:Acta materialia 2009-12, Vol.57 (20), p.6226-6233
Hauptverfasser: Genau, A.L., Voorhees, P.W.
Format: Artikel
Sprache:eng
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Zusammenfassung:Spatial correlations of interfacial curvature are compared for symmetric and asymmetric two-phase mixtures produced following spinodal decomposition as given by a numerical solution to the Cahn–Hilliard equation in three dimensions. By calculating radial distribution functions of the density of interfacial area as a function of the mean interfacial curvature of these bicontinuous microstructures, it is found that long-range diffusive interactions, in combination with the morphology of the system, yield a variety of correlations and anticorrelations over a range of length scales. The asymmetric mixtures show some similarities to the symmetric mixtures, as well as other unique features.
ISSN:1359-6454
1873-2453
DOI:10.1016/j.actamat.2009.08.049