Preparation and Characterization of Titanate-Phosphate Passivation Film on Tinplate

Authors

Zi-yu WANG, School of Chemistry and Chemical Engineering, Harbin Institute of Technology., Harbin 150001 China;
Ming-hao WANG, School of Chemistry and Chemical Engineering, Harbin Institute of Technology., Harbin 150001 China;
De-yu LI, School of Chemistry and Chemical Engineering, Harbin Institute of Technology., Harbin 150001 China;
Ning LI, School of Chemistry and Chemical Engineering, Harbin Institute of Technology., Harbin 150001 China;Follow

Corresponding Author

Ning LI(lininghit@263.net)

Abstract

A passivation film was prepared on tinplate surface with a composite passivating agent made of titanate and phosphate. The surface morphologies, chemical compositions and corrosion resistances of the passivation films were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), salt spray test, Tafel polarization measurement and electrochemical impedance spectroscopy (EIS). The results were compared with those films untreated and treated with titanate or phosphate passivation. It was shown that the titanate and phosphate passivation film was mainly composed of Ti₃(PO₄)₄·nH₂O and TiO₂. The finely crystallized surface could seal holes, therefore, a good passivation performance on tinplates could be achieved.

Graphical Abstract

Keywords

tin plating, titanium salt, phosphate, Cr free passivation, corrosion resistance

DOI Link

https://doi.org/10.13208/j.electrochem.170442

Publication Date

2018-02-28

Online Available Date

2017-05-24

Revised Date

2017-05-19

Received Date

2017-04-14

Recommended Citation

Zi-yu WANG, Ming-hao WANG, De-yu LI, Ning LI. Preparation and Characterization of Titanate-Phosphate Passivation Film on Tinplate[J]. Journal of Electrochemistry, 2018 , 24(1): 13-19.
DOI: 10.13208/j.electrochem.170442
Available at: https://jelectrochem.xmu.edu.cn/journal/vol24/iss1/3