Abstract
Thin layers of Al2O3 were used to protect a standard FC250 cast iron at electro-corrosion in acid rain electrolyte solution. In comparison with a cast-iron material we present the results obtained on the metallic covered sample using linear and cyclic potentiometry. The material surface was investigated using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) techniques. The results present a generalized corrosion with a higher resistance for covered samples (more than 30 times) in comparison with the simple cast iron. The main causes of the corrosion of the covered samples are based on the thin ceramic layer imperfections like pores or micro-cracks that facilitate the contact of the electrolyte solution with the metallic substrate.
Highlights
FC250 cast iron we present the at electro-corrosion in acid rain electrolyte results obtained on the metallic covered sample using linear and cyclic potentiometry
Chemical composition and electrochemical experiments different samples were prepared for deposition of ceramic layers using plasma deposition method
Experimental results present the electro-corrosion resistance of three samplestnhidne potentio-dynamic linear polarization curves coating layers of different thicknesses on FC250
Summary
FC250 cast iron we present the at electro-corrosion in acid rain electrolyte results obtained on the metallic covered sample using linear and cyclic potentiometry. Experimental part In order to increase the corrosion and wear resistance of standard FC cast iron material, used for automotive industry at breaking system, using ceramic thin layers. Chemical composition and electrochemical experiments different samples were prepared for deposition of ceramic layers using plasma deposition method.
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