Preparation and Performance Evaluation of Zinc Phosphate-Coated Mica Anticorrrosive Pigment 


Vol. 19,  No. 3, pp. 257-263, Sep.  2013
10.7464/ksct.2013.19.3.257


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  Abstract

The zinc phosphate-coated mica (ZP/mica) pigments were prepared using phosphoric acid, zinc nitrate and mica as starting materials, and used as anticorrosive pigments. The scanning electron microscopy (SEM) and x-ray diffraction (XRD) techniques were used to observe the morphology and crystal structure of prepared pigments. The prepared pigments were incorporated into an epoxy binder to prepare coating and the corrosion inhibition performance of the pigments was evaluated using electrochemical impedance spectroscopy (EIS). It was found that the anticorrosive performance of the ZP/mica pigment prepared at 70 ℃was the better than that prepared at 20 ℃. The formation of ZnO, in addition to Zn3(PO4)2ㆍH2O, was observed on ZP/mica pigment prepared at 70 ℃. The excellent anticorrosive performance of ZP/mica pigment could be ascribed to the synergistic effect with electrochemical anticorrosive mechanism from zinc compounds on mica and barrier anticorrosive mechanism from lamellar mica.

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  Cite this article

[IEEE Style]

L. YJ, P. SS, H. SS, L. SH, K. DS, L. GD, "Preparation and Performance Evaluation of Zinc Phosphate-Coated Mica Anticorrrosive Pigment," Clean Technology, vol. 19, no. 3, pp. 257-263, 2013. DOI: 10.7464/ksct.2013.19.3.257.

[ACM Style]

Lee YJ, Park SS, Hong SS, Lee SH, Kim DS, and Lee GD. 2013. Preparation and Performance Evaluation of Zinc Phosphate-Coated Mica Anticorrrosive Pigment. Clean Technology, 19, 3, (2013), 257-263. DOI: 10.7464/ksct.2013.19.3.257.

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