Inhibition of filiform corrosion on polymer coated AA2024-T3 by hydrotalcite-like pigments incorporating organic anions

被引：100

作者：

Williams, G ^{[1
]}

McMurray, HN ^{[1
]}

机构：

[1] Univ Wales Swansea, Sch Engn, Mat Res Ctr, Swansea SA2 8PP, W Glam, Wales

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 05期

关键词：

D O I：

10.1149/1.1691529

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Benzotriazolate, ethyl xanthate, and oxalate anion-exchanged hydrotalcite (HT) pigments are evaluated with respect to their ability to inhibit filiform corrosion (FFC) on organic coated AA2024-T3 aluminum alloy. Following FFC initiation by application of aqueous HCl to a penetrative coating defect, the time-dependent extent of coating delamination was determined both optically and by repeated in situ measurements performed using a scanning Kelvin probe (SKP). Inhibitor efficiency is shown to increase in the order ethyl xanthate << oxalate < benzotriazolate. Benzotriazolate is also shown to interact specifically with the alloy surface, depressing Volta potential values by up to 0.4 V. (c) 2004 The Electrochemical Society.

引用

页码：B13 / B15

页数：3

共 31 条

[21] REFLECTION INFRA-RED STUDIES OF FILMS FORMED BY BENZOTRIAZOLE ON CU [J].

POLING, GW .

CORROSION SCIENCE, 1970, 10 (05) :359-&

[22] Quantitative characterization of protective films grown on copper in the presence of different triazole derivative inhibitors [J].

Qafsaoui, W ;

Blanc, C ;

Pébère, N ;

Takenouti, H ;

Srhiri, A ;

Mankowski, G .

ELECTROCHIMICA ACTA, 2002, 47 (27) :4339-4346

[23] Scanning Kelvinprobe investigations of filiform corrosion on aluminum alloy 2024-T3 [J].

Schmidt, W ;

Stratmann, M .

CORROSION SCIENCE, 1998, 40 (08) :1441-1443

[24] ELECTROCHEMICAL CHARACTERISTICS OF THE AL2CU, AL3TA AND AL3ZR INTERMETALLIC PHASES AND THEIR RELEVANCY TO THE LOCALIZED CORROSION OF AL-ALLOYS [J].

SCULLY, JR ;

KNIGHT, TO ;

BUCHHEIT, RG ;

PEEBLES, DE .

CORROSION SCIENCE, 1993, 35 (1-4) :185-195

[25] Some experiments regarding the corrosion inhibition of copper by benzotriazole and potassium ethyl xanthate [J].

Souto, RM ;

Fox, V ;

Laz, M ;

Perez, M ;

Gonzalez, S .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1996, 411 (1-2) :161-165

[26] Growth of passivating CuBTA films on copper in aqueous chloride/benzotriazole solutions [J].

Tromans, D ;

Li, GH .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2002, 5 (02) :B5-B8

[27] Development of an electromagnetic micro-generator [J].

Williams, CB ;

Shearwood, C ;

Harradine, MA ;

Mellor, PH ;

Birch, TS ;

Yates, RB .

IEE PROCEEDINGS-CIRCUITS DEVICES AND SYSTEMS, 2001, 148 (06) :337-342

[28] The kinetics of chloride-induced filiform corrosion on aluminum alloy AA2024-T3 [J].

Williams, G ;

McMurray, HN .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (08) :B380-B388

[29] Anion-exchange inhibition of filiform corrosion on organic coated AA2024-T3 aluminum alloy by hydrotalcite-like pigments [J].

Williams, G ;

McMurray, HN .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2003, 6 (03) :B9-B11

[30]

Williams G, 2001, J FORENSIC SCI, V46, P1085

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