Role of interfacial energy during pattern formation of electropolishing

被引：17

作者：

Guo, WD ^{[1
]}

Johnson, D ^{[1
]}

机构：

[1] Univ Alabama, Dept Chem Engn, Tuscaloosa, AL 35487 USA

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.67.075411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper investigates the effect of interfacial energy on nanoscale pattern formation during electropolishing of aluminum. We correct a small error in the existing theory of Yuzhakov that unfortunately no longer predicts stable hexagonal patterns. Upon including the interfacial energy in the derivation, the stable hexagons are recovered. We have derived the evolution equation of the aluminum interface during electropolishing and performed a linear and weakly nonlinear stability analysis. The results give values that lead to stable striped or hexagonal patterns. Results of a full nonlinear simulation of the evolution equation agree qualitatively with the weakly nonlinear results. Experimental results also verify our model, which predicts the coexistence of striped and hexagonal patterns in one sample.

引用

页数：7

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