期刊
CORROSION SCIENCE
卷 97, 期 -, 页码 17-24出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2015.03.021
关键词
A. Aluminum; B. X-ray diffraction; B. EIS; B. Reflectivity; C. Anodic films; C. Interfaces
资金
- Strategic Environmental Research and Development Program
- LANL under DOE [W7405-ENG-36]
- Office of Basic Energy Sciences, U.S. Department of Energy
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- U.S. Department of Energy [DE-AC05-00OR22725]
- Oak Ridge National Laboratory
- Division Of Chemistry [1346572] Funding Source: National Science Foundation
Ultra-small angle X-ray scattering (USAXS), small-angle neutron scattering (SANS), X-ray reflectomety (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 A). Electrochemical impedance spectroscopy and direct current polarization show that samples sealed by hot nickel acetate outperform samples sealed by other sealing methods. (C) 2015 Elsevier Ltd. All rights reserved.
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