Corrosion behaviour of AA2024 coated with an acid-soluble collagen/hybrid silica sol-gel matrix

被引：12

作者：

Gobara, Mohamed ^{[1
]}

Kamel, Hesham ^{[2
]}

Akid, Robert ^{[3
]}

Baraka, Ahmad ^{[1
]}

机构：

[1] Mil Tech Collage, Dept Chem Engn, Cairo, Egypt

[2] Mil Tech Collage, Dept Mech Engn, Cairo, Egypt

[3] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England

来源：

PROGRESS IN ORGANIC COATINGS | 2015年 / 89卷

关键词：

Corrosion; Collagen; Sol gel; FTIR; AA2024; EIS; SWIM-BLADDERS; ALUMINUM; PROTECTION; COATINGS; INHIBITION; ALLOY; SKIN; DERIVATIVES; MAGNESIUM; STEEL;

D O I：

10.1016/j.porgcoat.2015.07.026

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Collagen is a potential corrosion inhibitor for aluminium alloy 2024 (AA2024), being derived from fish scale, as confirmed by FTIR analysis. The extracted collagen powder was dissolved within a hybrid silica sot gel to produce an environmental friendly (green) coating. The corrosion behaviour of the silica sol gel (SOL) and collagen/silica sol gel.(CSOL) coated AA2024 in 3.5% NaCI solution was investigated by electrochemical impedance spectroscopy (EIS). In addition, the mechanical properties of both coatings were evaluated using hardness, micro-hardness resistance and a cross cut adhesion test. Results showed that collagen improves the corrosion resistance of the coated AA2024, while maintaining the mechanical properties of the non-doped silica sol gel coating. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：57 / 66

页数：10

共 54 条

[1] Antibacterial drugs as corrosion inhibitors for corrosion of aluminium in hydrochloric solution [J].