Improvement of corrosion resistance for carbon steel alloy (ST-52)‎ used in marine environments

Abstract EN

Carbon steel alloy types (ST-52-3RR) are widely used in constructing marine environments and other engineering structural applications due to their good corrosion resistance, mechanical and physical properties.

It suffers from corrosion specially in sea water.

In order to improve the alloy properties and to protect it from corrosion, the alloys must be protected in many methods.

In this study, surface coating technology used to provide one of the possibilities of control corrosion and to improve material properties.

The surface coatings are applied by thermal spray coating method to improve the corrosion resistance of alloys (ST-52 -3 RR).

Thermal spray coating is used due to its high reliability, ease in application and operation, its availability and availability of the material used in coating.

Electrochemical techniques including potentiostatic measurements are used together with immersion tests in 3.

5 % NaCl to evaluate the performance of the steel (ST-52-3RR) in marine environment.

This study indicates the beneficial of the Aluminum powder spray coating sealed by epoxy coating on aluminum coating layer due to the reduction in corrosion rate.

This reduction was noticed in weight loss method and low corrosion current density during polarization measurements.