Effect of sealing on the morphology of anodized aluminum oxide

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

doi:10.1016/j.corsci.2015.03.021

Effect of sealing on the morphology of anodized aluminum oxide

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

Research output: Contribution to journal › Article › peer-review

91 Scopus citations

Abstract

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). Electrochemical impedance spectroscopy and direct current polarization show that samples sealed by hot nickel acetate outperform samples sealed by other sealing methods.

Original language	English
Pages (from-to)	17-24
Number of pages	8
Journal	Corrosion Science
Volume	97
DOIs	https://doi.org/10.1016/j.corsci.2015.03.021
State	Published - Aug 1 2015
Externally published	Yes

Funding

Work at the University of Cincinnati was funded by the Strategic Environmental Research and Development Program. We thank Jan Ilavsky, Peng Wang, Michael Jablin, Jarek Majewski and Rex Hjelm for assistance in collecting and interpreting the data. The NR data were collected at the SPEAR reflectometer at Lujan Neutron Scattering Center at Los Alamos National Laboratory (LANL) and at the LR Reflectometer at the Spallation Neutron Source at Oak Ridge National Laboratory. USAXS data were measured at beam line 15 ID at the Advanced Photon Source, Argonne National Laboratory. SANS data were collected using the LQD instrument at the Lujan Center. The Lujan Neutron Scattering Center was supported by LANL under DOE contract W7405-ENG-36, and by Office of Basic Energy Sciences, U.S. Department of Energy. Use of the Advanced Photon Source was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The research at Oak Ridge was sponsored in part by the U.S. Department of Energy under Contract No. DE-AC05-00OR22725 with the Oak Ridge National Laboratory, managed by the UT-Battelle, LLC.

Funders	Funder number
Office of Basic Energy Sciences
U.S. Department of Energy	W7405-ENG-36
Office of Science
Los Alamos National Laboratory
Strategic Environmental Research and Development Program

Keywords

A. Aluminum
B. EIS
B. Reflectivity
B. X-ray diffraction
C. Anodic films
C. Interfaces

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10.1016/j.corsci.2015.03.021

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title = "Effect of sealing on the morphology of anodized aluminum oxide",

abstract = "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. {\AA}). Electrochemical impedance spectroscopy and direct current polarization show that samples sealed by hot nickel acetate outperform samples sealed by other sealing methods.",

keywords = "A. Aluminum, B. EIS, B. Reflectivity, B. X-ray diffraction, C. Anodic films, C. Interfaces",

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T1 - Effect of sealing on the morphology of anodized aluminum oxide

AU - Hu, Naiping

AU - Dong, Xuecheng

AU - He, Xueying

AU - Browning, James F.

AU - Schaefer, Dale W.

PY - 2015/8/1

Y1 - 2015/8/1

N2 - 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). Electrochemical impedance spectroscopy and direct current polarization show that samples sealed by hot nickel acetate outperform samples sealed by other sealing methods.

AB - 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). Electrochemical impedance spectroscopy and direct current polarization show that samples sealed by hot nickel acetate outperform samples sealed by other sealing methods.

KW - A. Aluminum

KW - B. EIS

KW - B. Reflectivity

KW - B. X-ray diffraction

KW - C. Anodic films

KW - C. Interfaces

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VL - 97

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JO - Corrosion Science

JF - Corrosion Science

ER -

Effect of sealing on the morphology of anodized aluminum oxide

Abstract

Funding

Keywords

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