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
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
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