Localized corrosion of a 2219 aluminium alloy exposed to a 3.5% NaCl solution

被引：138

作者：

Grilli, Rossana ^{[1
]}

Baker, Mark A. ^{[1
]}

Castle, James E. ^{[1
]}

Dunn, Barrie ^{[2
]}

Watts, John F. ^{[1
]}

机构：

[1] Univ Surrey, Fac Engn & Phys Sci, Surface Anal Lab, Surrey GU2 7XH, England

[2] European Space Technol Ctr, NL-2200 AG Noordwijk, Netherlands

来源：

CORROSION SCIENCE | 2010年 / 52卷 / 09期

关键词：

Aluminium alloy; Intermetallics; AES; Corrosion; PITTING CORROSION; INITIATION; SPECTROSCOPY; 2024-T3;

D O I：

10.1016/j.corsci.2010.04.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work is focused on the role of intermetallics in pitting corrosion of Al2219 alloy. Second phase particles were characterized by AES, SAM and EDX. Their behaviour in a solution of NaCl was investigated as a function of exposure time. The results confirmed the cathodic nature of the intermetallics with respect to the aluminium matrix. Corrosion products rich in aluminium and oxygen were found to progressively accumulate around the particles and iron was dissolved from the intermetallic, followed by back-deposition. Copper and manganese did not show any major activity. After 32 h of exposure the larger intermetallics were completely covered. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2855 / 2866

页数：12

共 15 条

[1] Microstructural effects on the formation and degradation of zinc phosphate coatings on 2024-Al alloy [J].

Akhtar, A. S. ;

Wong, P. C. ;

Wong, K. C. ;

Mitchell, K. A. R. .

APPLIED SURFACE SCIENCE, 2008, 254 (15) :4813-4819

[2] THE INITIATION OF PITTING CORROSION OF STAINLESS-STEELS AT OXIDE INCLUSIONS [J].

BAKER, MA ;

CASTLE, JE .

CORROSION SCIENCE, 1992, 33 (08) :1295-1312

[3] THE INITIATION OF PITTING CORROSION AT MNS INCLUSIONS [J].

BAKER, MA ;

CASTLE, JE .

CORROSION SCIENCE, 1993, 34 (04) :667-682

[4] STUDIES BY AUGER-SPECTROSCOPY OF PIT INITIATION AT THE SITE OF INCLUSIONS IN STAINLESS-STEEL [J].

CASTLE, JE ;

KE, R .

CORROSION SCIENCE, 1990, 30 (4-5) :409-428

[5] THE USE OF SCANNING AUGER MICROSCOPY TO LOCATE CATHODIC CENTERS IN SICP/6061 AL MMC AND TO DETERMINE THE CURRENT-DENSITY AT WHICH THEY OPERATE [J].

CASTLE, JE ;

SUN, L ;

YAN, H .

CORROSION SCIENCE, 1994, 36 (06) :1093-&

[6] THE ROLE OF ELECTRON-SPECTROSCOPY IN CORROSION SCIENCE [J].

CASTLE, JE .

SURFACE AND INTERFACE ANALYSIS, 1986, 9 (1-6) :345-356

[7]

*EUR SPAC AG, 2004, ECSSQ7071A EUR SPAC

[8]

KUZNICKA B, MAT CHARACT IN PRESS

[9] Galvanic coupling of model alloys to aluminum - a foundation for understanding particle-induced pitting in aluminum alloys [J].

Liao, CM ;

Wei, RP .

ELECTROCHIMICA ACTA, 1999, 45 (06) :881-888

[10]

Rabbetts A, 1998, T I MET FINISH, V76, pB4

← 1 2 →