Effect of sealing on the morphology of anodized aluminum oxide

Hu, Naiping; Dong, Xuecheng; He, Xueying; Browning, James F.; Schaefer, Dale W.

doi:10.1016/j.corsci.2015.03.021

Title: Effect of sealing on the morphology of anodized aluminum oxide

Journal Article · Wed Jun 10 00:00:00 EDT 2015 · Corrosion Science

DOI:https://doi.org/10.1016/j.corsci.2015.03.021· OSTI ID:1836473

Hu, Naiping ^[1]; Dong, Xuecheng ^[1]; He, Xueying ^[1];

^[2]; Schaefer, Dale W. ^[1]

Univ. of Cincinnati, OH (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Ultra-small angle X-ray scattering (USAXS), small-angle neutron scattering (SANS), X-ray reflectometry (XRR) and neutron reflectometry (NR) were used to probe structure evolution induced by sealing of anodized aluminum. While cold nickel acetate sealing and hot-water sealing decrease pore size, these methods do not alter the cylindrical porous framework of the anodic aluminum oxide layer. Hot nickel acetate both fills the pores and deposits on the air surface (air–oxide interface), leading to low porosity and small mean pore radius (39 Å). Finally, electrochemical impedance spectroscopy and direct current polarization show that samples sealed by hot nickel acetate outperform samples sealed by other sealing methods.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC05-00OR22725; W7405-ENG-36; AC02-06CH11357

OSTI ID:: 1836473

Alternate ID(s):: OSTI ID: 1248435

Journal Information:: Corrosion Science, Vol. 97; ISSN 0010-938X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 68 works

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Title: Effect of sealing on the morphology of anodized aluminum oxide

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