期刊
CORROSION SCIENCE
卷 53, 期 6, 页码 2168-2175出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.02.036
关键词
Steel; EIS; XPS; SIMS; Oxide coatings
资金
- European Community [FP7/2007-2013, CP-FP 213996-1]
ToF-SIMS, XPS, voltammetry and EIS investigation of the anti-corrosion properties of thin (10, 50 and 100 nm) alumina coatings grown by atomic layer deposition at 160 degrees C on steel is reported. Surface analysis shows a thickness-independent Al2O3 stoichiometry of the coating and trace contamination by the growth precursors. The buried coating/alloy interface has iron oxide formed in ambient air and/or resulting from the growth of spurious traces in the initial stages of deposition. Electrochemical analysis yields an exponential decay of the coating porosity over four orders of magnitude with increasing thickness, achieved by sealing of the more defective first deposited 10 nm. (C) 2011 Elsevier Ltd. All rights reserved.
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