期刊
CORROSION SCIENCE
卷 49, 期 3, 页码 1597-1609出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2006.08.006
关键词
aluminium alloys; fluorometric analysis; high throughput screening; corrosion inhibition; synergy
The discovery of new corrosion inhibition systems remains dependent on experimental methods for screening and characterization. This paper examines a new method to rapidly assess aluminium alloy corrosion and inhibitor performance through quantification of aluminium ion concentration using fluorometric probes. The fluorometric probes, lumogallion and morin, were used in conjunction with a plate reader to rapidly assess fourteen corrosion inhibitors and their combinations for AA2024-T3. AA2024-T3 wire electrodes were exposed to 3.4mM total inhibitor concentration in 0.6 M NaCl adjusted to pH 2, 4, 7, 10, and 12 for 1-7 days. Corrosion inhibition provided by mixtures of lanthanum and molybdate, cerium and molybdate, and metavanadate with phosphate was found to be superior to the equivalent concentration of sodium chromate. (c) 2006 Elsevier Ltd. All rights reserved.
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