Modelling the corrosion behaviour of Al2CuMg coarse particles in copper-rich aluminium alloys

被引：69

作者：

Blanc, Christine

Freulon, Alexandre

Lafont, Marie-Christine

Kihn, Yolande

Mankowski, Georges

机构：

[1] ENSIACET, UMR CNRS 5085, CIRIMAT, F-31077 Toulouse 04, France

[2] CEMES, UPR 8011, F-31055 Toulouse 04, France

来源：

CORROSION SCIENCE | 2006年 / 48卷 / 11期

关键词：

aluminium; intermetallics; sputtered films; passive films; corrosion; PROBE FORCE MICROSCOPY; PITTING CORROSION; ANODIC FILM; 2024-T3; 2024-ALUMINUM-ALLOY; SPECTROSCOPY; ENRICHMENT; AA2024-T3; GROWTH;

D O I：

10.1016/j.corsci.2006.01.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion behaviour of 2024 aluminium alloy in sulphate solutions was studied; attention was focused on the influence of coarse intermetallic Al2CuMg particles on the corrosion resistance of the alloy. Model alloys representative of the aluminium matrix and of Al2CuMg coarse intermetallics were synthesized by magnetron sputtering. Open-circuit potential measurements, current-potential curve plotting and galvanic coupling tests were performed in sulphate solutions with or without chlorides. Further explanations were deduced from the study of the passive films grown on model alloys in sulphate solutions. The results showed that model alloys are a powerful tool to study the corrosion behaviour of aluminium alloys. (c) 2006 Elsevier Ltd. All rights reserved.

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页码：3838 / 3851

页数：14

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