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Effect of sealing on the morphology of anodized aluminum oxide

Journal Article · · Corrosion Science
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.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; AC05-00OR22725; W-7405-ENG-36
OSTI ID:
1836473
Alternate ID(s):
OSTI ID: 22473257
OSTI ID: 1188830
OSTI ID: 1248435
Journal Information:
Corrosion Science, Journal Name: Corrosion Science Vol. 97; ISSN 0010-938X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

Effect of NaAlO 2 sealing on corrosion resistance of 2024 aluminum alloy anodized film journal July 2018
Effect of concentration of Ce(NO 3 ) 3  · 6H 2 O and temperature on the corrosion resistance of Al 2 O 3 /cerium oxide composite films on 1060 Al alloy journal January 2019
Corrosion and mechanical properties of plasma electrolytic oxidation‐coated AZ80 magnesium alloy journal May 2019
Application of experimental design for AA6351 aluminum alloy anodization and coloring journal October 2018
Nanoparticles deposition effects on 1050A aluminum alloy anodic layers journal January 2020
Determination of the dye penetration rate in porous aluminum oxide using Raman spectroscopy journal May 2019
The Effect of Electrolyte Temperature and Sealing Solution in Anodizing Operation on Hardness and wear Behavior of 7075 -t6 Aluminum Alloy journal February 2019
Influence of Concentration and pH of Hexafluorozirconic Acid on Corrosion Resistance of Anodized AA7075-T6 journal January 2019

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