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Formation Mechanism of Porous Anodic Aluminium and Titanium Oxides
Author(s) -
Su Zixue,
Zhou Wuzong
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200800845
Subject(s) - materials science , titanium , porosity , anode , aluminium , transmission electron microscopy , anodizing , titanium oxide , oxide , chemical engineering , dissociation (chemistry) , aluminium oxide , anodic oxidation , metallurgy , inorganic chemistry , composite material , nanotechnology , chemistry , electrode , engineering
Porous anodic aluminium and titanium oxides are investig ated. An equifield strength model is proposed to explain the formation of the pores and their self‐adjustment of ordering. High‐resolution transmission electron microscopy analysis revealed a double‐layer structure in the anodic titanium oxide nanotubes. It is also shown that the porosity of the porous anodic oxide film is mainly governed by the relative dissociation rate of water.