In situ growth of Mg-Al hydrotalcite conversion film on AZ31 magnesium alloy

被引：149

作者：

Chen, Jun ^{[1
]}

Song, Yingwei ^{[1
]}

Shan, Dayong ^{[1
]}

Han, En-Hou ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

来源：

CORROSION SCIENCE | 2011年 / 53卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Magnesium; XPS; XRD; Polarization; Passive films; LAYERED DOUBLE HYDROXIDES; CORROSION-RESISTANCE; COATINGS; PROTECTION; ALUMINUM; XPS; PERFORMANCE; COMPOSITE; CHEMISTRY; BEHAVIOR;

D O I：

10.1016/j.corsci.2011.06.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In situ growth of Mg-Al hydrotalcite conversion film on AZ31 alloy has been developed by a two-step method. The characteristics of the films were investigated by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electronic microscope (SEM) observation, electrochemical and immersion tests. The film formation process was proposed based on the open circuit potential (OCP) measurements and surface analysis. A precursor film with network cracks is first formed and then this film is transformed into a compact and uniform hydrotalcite (Mg(6)Al(2)(OH)(16)CO(3)center dot 4H(2)O) film after the post treatment. This dense Mg-Al hydrotalcite film can provide effective protection to the AZ31 alloy. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：3281 / 3288

页数：8

共 39 条

[1] An XPS investigation on glucose oxidase and Ni/Al hydrotalcite interaction [J].

Addari, Danilo ;

Mignani, Adriana ;

Scavetta, Erika ;

Tonelli, Domenica ;

Rossi, Antonella .

SURFACE AND INTERFACE ANALYSIS, 2011, 43 (04) :816-822

[2] Comparative study of Mg/M(III) (M = Al, Ga, In) layered double hydroxides obtained by coprecipitation and the sol-gel method [J].

Aramendia, MA ;

Borau, V ;

Jiménez, U ;

Marinas, JM ;

Ruiz, JR ;

Urbano, FJ .

JOURNAL OF SOLID STATE CHEMISTRY, 2002, 168 (01) :156-161

[3] Corrosion protection of magnesium alloys by cerium, zirconium and niobium-based conversion coatings [J].

Ardelean, Helene ;

Frateur, Isabelle ;

Marcus, Philippe .

CORROSION SCIENCE, 2008, 50 (07) :1907-1918

[4] The relation between severe plastic deformation microstructure and corrosion behavior of AZ31 magnesium alloy [J].

Ben Hamu, G. ;

Eliezer, D. ;

Wagner, L. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 468 (1-2) :222-229

[5] Influence of target surface degradation on the properties of r.f. magnetron-sputtered calcium phosphate coatings [J].

Boyd, A ;

Akay, M ;

Meenan, BJ .

SURFACE AND INTERFACE ANALYSIS, 2003, 35 (02) :188-198

[6]

BUCHHEIT RG, 2004, J COMPOS TECH RES, V4, P277

[7] Properties of dawsonite conversion film on AZ31 magnesium alloy [J].

Chen Jun ;

Song Ying-wei ;

Shan Da-yong ;

Han En-hou .

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2011, 21 (04) :936-942

[8] The role of hexafluorozirconate in the formation of chromate conversion coatings on aluminum alloys [J].

Chidambaram, D ;

Clayton, CR ;

Halada, GP .

ELECTROCHIMICA ACTA, 2006, 51 (14) :2862-2871

[9]

Costantino U, 1998, EUR J INORG CHEM, P1439

[10] Synthesis of NiGa layered double hydroxides.: A combined EXAFS, SAXS, and TEM study.: 2.: Hydrolysis of a Ni2+/Ga3+ solution [J].

Defontaine, G ;

Michot, LJ ;

Bihannic, I ;

Ghanbaja, J ;

Briois, V .

LANGMUIR, 2004, 20 (22) :9834-9843

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