Sol-gel coatings for corrosion protection of 1050 aluminium alloy

被引：29

作者：

Feng, Z. ^{[1
]}

Liu, Y. ^{[1
]}

Thompson, G. E. ^{[1
]}

Skeldon, P. ^{[1
]}

机构：

[1] Univ Manchester, Ctr Corros & Protect, Sch Mat, Manchester M13 9PL, Lancs, England

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

Aluminium alloy; Sol-gel; Coating; Corrosion protection; Curing temperature; SURFACE TREATMENTS; STRESS EVOLUTION; FILMS; AL;

D O I：

10.1016/j.electacta.2010.01.074

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The formation of organic-modified sol-gel coatings on 1050 aluminium alloy has been examined. The coatings were prepared by the combination of a completely hydrolysable precursor of tetra-n-propoxyzirconium (TPOZ), with a partly hydrolysable precursor of glycidoxypropyltrimethoxysilane (GPTMS). Influences of GPTMS/TPOZ ratio, withdrawal speed and curing temperature on the barrier-type corrosion protection of the alloy were examined. By control of process parameters and ratios of organic and inorganic moieties, crack-free sot-gel coatings with improved corrosion protection were produced on the alloy surface. Optimum protection was achieved by a coating formed with a GPTMS/TPOZ ratio of 2.7, a withdrawal speed of 180 mm/min and curing at 110 degrees C. The coating formed under the optimum conditions revealed good adhesion to the etched and desmutted alloy substrate. The pitting potential of the coated alloy increased significantly, indicative of an improved corrosion protection of the alloy. (C) 2010 Published by Elsevier Ltd.

引用

页码：3518 / 3527

页数：10

共 23 条

[1]

Brinker C. J., 1990, SOL GEL SCI

[2] Self-assembled NAnophase Particle (SNAP) surface treatments for corrosion protection of AA2024-T3 [J].

Donley, MS ;

Balbyshev, VN ;

Voevodin, NN .

PROGRESS IN ORGANIC COATINGS, 2005, 52 (01) :34-38

[3] The self-assembled nanophase particle (SNAP) process: a nanoscience approach to coatings [J].

Donley, MS ;

Mantz, RA ;

Khramov, AN ;

Balbyshev, VN ;

Kasten, LS ;

Gaspar, DJ .

PROGRESS IN ORGANIC COATINGS, 2003, 47 (3-4) :401-415

[4] ALGORITHMS FOR THE RAPID SIMULATION OF RUTHERFORD BACKSCATTERING SPECTRA [J].

DOOLITTLE, LR .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1985, 9 (03) :344-351

[5]

Du YJ, 2001, PROG ORG COAT, V41, P226

[6] Self-repairing coating for corrosion protection of aluminum alloys [J].

He, Xiaodong ;

Shi, Xianming .

PROGRESS IN ORGANIC COATINGS, 2009, 65 (01) :37-43

[7] Structure and Properties of Sol-Gel Coatings from Methyltriethoxysilane and Tetraethoxysilane [J].

Innocenzi, P. ;

Abdirashid, M. O. ;

Guglielmi, M. .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 1994, 3 (01) :47-55

[8]

*JCPDS INT CTR DIF, 2002, 371484 JCPDS PDF INT

[9] PREPARATION OF SIO2-FILMS FROM SI(OC2H5)4-C2H5OH-H2O SOLUTIONS WITHOUT CATALYSTS [J].

KATO, K .

JOURNAL OF MATERIALS SCIENCE, 1992, 27 (06) :1445-1448

[10] Nanostructured sol-gel derived conversion coatings based on epoxy- and amino-silanes [J].

Khramov, AN ;

Balbyshev, VN ;

Voevodin, NN ;

Donley, MS .

PROGRESS IN ORGANIC COATINGS, 2003, 47 (3-4) :207-213

← 1 2 3 →