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Study on the chemical deposition on steel of zinc phosphate with other metallic cations and hexamethilen tetramine. II. Evaluation of corrosion resistance

A. V. SANDU1, A. CIOMAGA2, G. NEMTOI3, C. BEJINARIU1, I. SANDU4,*

Affiliation

  1. “Gheorghe Asachi” Technical University of Iasi, Faculty of Material Science and Engineering, Iasi, Romania
  2. “Alexandru Ioan Cuza” University of Iasi, Faculty of Geography and Geology, Iasi, Romania
  3. “Alexandru Ioan Cuza” University of Iasi, Faculty of Chemistry, Iasi, Romania
  4. “Alexandru Ioan Cuza” University of Iasi, ARHEOINVEST Platform, Laboratory of Scientific Investigation, Iasi, Romania

Abstract

We studied the effect of the insertion with Co(II), Mg(II) and Ni(II) and of an surface agent (hexamethilentetramine) of the zinc phosphate layer on steel plates. The samples were analyzed using SEM-EDX and the corrosion behaviour of phosphated coatings was determinated by potentiostatic polarization. From the obtained data we were able to optimize solutions in order to obtain better corrosion resistance results for the phosphate layers..

Keywords

Zinc phosphate, Co-precipitation, Thin layer; SEM-EDX, Corrosion test.

Submitted at: May 9, 2012
Accepted at: July 19, 2012

Citation

A. V. SANDU, A. CIOMAGA, G. NEMTOI, C. BEJINARIU, I. SANDU, Study on the chemical deposition on steel of zinc phosphate with other metallic cations and hexamethilen tetramine. II. Evaluation of corrosion resistance, Journal of Optoelectronics and Advanced Materials Vol. 14, Iss. 7-8, pp. 704-708 (2012)