Effect of pH on the structure and corrosion protection properties of sol-gel coatings

被引：20

作者：

Chen, Chao ^{[1
]}

Yu, Mei ^{[1
]}

Zhan, Zhongwei ^{[2
]}

Ge, Yulin ^{[2
]}

Sun, Zhihua ^{[2
]}

Liu, Jianhua ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[2] AECC Beijing Inst Aeronaut Mat, Beijing 100195, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 212卷

关键词：

Sol -gel coatings; pH; Hydrolysis; Condensation; Corrosion protection; MESOPOROUS SILICA; EPOXY COATINGS; SILANE; ANTICORROSION; PERFORMANCE; NANOCOMPOSITE; ALLOY; NANOPARTICLES; PRETREATMENT; INHIBITORS;

D O I：

10.1016/j.corsci.2022.110955

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, effect of pH on the structure and corrosion protection properties of sol-gel coatings were investigated, with a special focus on a broad pH range (pH = 1-10) of sol synthesis process. Viscosity, molecular weight, particle size measurements of sols and structural analysis of sol-gel coatings show the highest condensation degree in pH = 4 samples. Electrochemical, localized electrochemical techniques and morphology characterization demonstrate the best corrosion resistance of pH = 4 coatings. Results reveal that high condensation degree results in a compact and stable three-dimensional sol-gel network with high crosslinking density and less silanol content, providing highly effective corrosion protection.

引用

页数：16

共 53 条

[1] Enhancement of anticorrosion property of 304 stainless steel using silane coatings [J].

Akhtar, Sultan ;

Matin, Asif ;

Kumar, A. Madhan ;

Ibrahim, Ahmed ;

Laoui, Tahar .

APPLIED SURFACE SCIENCE, 2018, 440 :1286-1297

[2] Evaluation of the corrosion protection performance of mild steel coated with hybrid sol-gel silane coating in 3.5 wt.% NaCl solution [J].

Alibakhshi, E. ;

Akbarian, M. ;

Ramezanzadeh, M. ;

Ramezanzadeh, B. ;

Mandavian, M. .

PROGRESS IN ORGANIC COATINGS, 2018, 123 :190-200

[3] Smart organic/inorganic sol-gel nanocomposite containing functionalized mesoporous silica for corrosion protection [J].

Ashrafi-Shahri, S. M. ;

Ravari, F. ;

Seifzadeh, D. .

PROGRESS IN ORGANIC COATINGS, 2019, 133 :44-54

[4] The influence of an acid catalyst on the morphology, wettabillity, adhesion and chemical structure properties of TiO2 and ZrO2 sol-gel thin films [J].

Babiarczuk, Bartosz ;

Szczurek, Anna ;

Donesz-Sikorska, Anna ;

Rutkowska, Iwona ;

Krzak, Justyna .

SURFACE & COATINGS TECHNOLOGY, 2016, 285 :134-145

[5] Sol-gel coatings with hydrothermal hydroxylation as pre-treatment for 2198-T851 corrosion protection performance [J].

Chen, Hui ;

Shen, Jun ;

Deng, Jinzhao ;

Hu, Youdian ;

Zhang, Yanhua .

APPLIED SURFACE SCIENCE, 2020, 508

[6] Structural transformation of silane-based zirconium-modified sol-gel coatings [J].

Collazo, A. ;

Covelo, A. ;

Perez, C. .

SURFACE AND INTERFACE ANALYSIS, 2010, 42 (6-7) :1201-1204

[7] The role of the hydrolysis and zirconium concentration on the structure and anticorrosion performances of a hybrid silicate sol-gel coating [J].

Cullen, M. ;

O'Sullivan, M. ;

Kumar, A. Madhan ;

Sorour, A. A. ;

Duffy, B. ;

Oubaha, M. .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2018, 86 (03) :553-567

[8] An investigation into the Role of the Acid Catalyst on the Structure and Anticorrosion Properties of Hybrid Sol-Gel Coatings [J].

Cullen, Maikki ;

Kaworek, Alicja ;

Mohan, Joseph ;

Duffy, Brendan ;

Oubaha, Mohamed .

THIN SOLID FILMS, 2021, 729

[9] Optimum preparation of silanes for steel pre-treatment [J].

Cunliffe, AV ;

Evans, S ;

Tod, DA ;

Torry, SA ;

Wylie, P .

INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES, 2001, 21 (04) :287-296

[10] Hybrid sol-gel coatings applied on anodized AA2024-T3 for active corrosion protection [J].

del Olmo, R. ;

Tiringer, U. ;

Milosev, I ;

Visser, P. ;

Arrabal, R. ;

Matykina, E. ;

Mol, J. M. C. .

SURFACE & COATINGS TECHNOLOGY, 2021, 419

← 1 2 3 4 5 6 →