NDLI: Morphological evolution of tunnel tips for aluminum foils during DC etching

Content Provider	Springer Nature Link
Author	Liang, Li bo He, Ye dong Song, Hong zhou Yang, Xiao fei Cai, Xiao yu
Copyright Year	2013
Abstract	The morphologies of tunnel tips in different stages for aluminum foils during DC etching in 1.5 mol/L HCl solution at 90°C were observed by field emission scanning electron microscopy (FE-SEM). A novel model was proposed to describe the morphological evolution of tunnel tips throughout the growth processes. In the pit nucleation stage, the pits vary from the hemispherical to half-cubic shapes due to the activation of pit tips from the center to the edge. During the tunnel growth stage, the pits dissolve toward the depth direction and develop into the tunnels, and their tips remain flat. In the tip passivation stage, as the passivation of tunnel tips speeds up from the edge to the center, the tunnel tips change from flat shapes to three-dimensional protrusions. The mechanism may be attributed to the order of activation or passivation on the tunnel tips changed in different stages.
Starting Page	961
Ending Page	966
Page Count	6
File Format	PDF
ISSN	16744799
Journal	International Journal of Minerals, Metallurgy, and Materials
Volume Number	20
Issue Number	10
e-ISSN	1869103X
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-10-17
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	aluminum corrosion pitting polarization etching electrolytic capacitors Materials Science Metallic Materials Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Geochemistry and Petrology Mechanical Engineering

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