Protection of 2024-T3 aluminium alloy by corrosion resistant phytic acid conversion coating

abstract

The corrosion protection properties of environmentally friendly phytic acid conversion coatings were studied on 2024-T3 aluminium alloy. The films were prepared under acidic conditions with various pH values and characterised by SEM, EDS, ATR-FTIR and electrochemical techniques. The results indicate that the conversion coatings obtained by immersing the alloy in phytic acid solutions at pH from 3 to 5.5 provide excellent corrosion resistance. ATR-FTIR confirms that the film is formed by deposition of reaction products between Al3+ and phosphate groups in phytic acid molecules. The conformation models of the deposition film are proposed. (C) 2013 Elsevier B.V. All rights reserved.

keywords

SELF-ASSEMBLED MONOLAYER; COPPER CORROSION; MAGNESIUM ALLOYS; AQUEOUS-SOLUTION; NACL SOLUTION; CERIUM OXIDE; ADSORPTION; DEPOSITION; AA2024-T3; MICROSTRUCTURE

subject category

Chemistry; Materials Science; Physics

authors

Shi, HW; Han, EH; Liu, FC; Kallip, S

our authors

Groups

acknowledgements

The authors acknowledge the financial support from the National Natural Science Fund of China (Grant No. 51001109).

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".