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vol.75 issue156SYNTHESIS OF SILICON OXIDE WITH HIGH SUPERFICIAL AREA AND POROSITY THROUGH SOL-GEL TECHNIQUE USING GLYCEROL AND GLYCERYL MONOSTEARATE AS TEMPLATESBaTiO3 OBTAINED BY COPRECIPITATION METHOD author indexsubject indexarticles search
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DYNA

Print version ISSN 0012-7353On-line version ISSN 2346-2183

Abstract

PIRATOBA, ULISES; VERA, ENRIQUE  and  ORTIZ, CESAR. SUPERFICIAL, ELECTROCHEMICAL AND COMPOSITIONAL CHARACTERIZATION OF ZINC nICKEL ELECTROCOATINGS. Dyna rev.fac.nac.minas [online]. 2008, vol.75, n.156, pp.217-221. ISSN 0012-7353.

The high request for zinc or zinc alloys electro coating steel sheets is attended by continuous electro coating process; this required high current densities obtained in acidic electrolytes. In this work, the composition, surface morphology and electrochemical characterization of gamma phase Zinc Nickel alloys on cold rolled steel sheets, obtained with high current densities is present. These were determined by Energy Dispersive X-ray Analysis EDX, Scanning Electron Microscopy SEM and Atomic Force Microscopy AFM, and Electrochemical Impedance EI and Tafel polarization. It was find passive coatings of fine grain that exhibit anodic behavior against the steel substrate.

Keywords : Plating; Zinc Nickel coating; coating; corrosion.

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