Abstract:

This work presents the design and construction of a rotary system for the dynamic study of corrosion in industrial steels. The prototype is conceived as a low-cost alternative to commercial equipment such as the Rotating Disk Electrode (RDE), whose cost and operational limitations restrict its use in laboratories and educational  institutions.

The developed system employs a direct current (DC) electric motor coupled with propellers manufactured by 3D printing using PLA material, capable of generating dynamic flow in aqueous NaCl solutions. The electronic control, based on an Arduino board, allows regulation of both rotation speed and direction (counterclockwise, clockwise, and alternating modes), providing experimental flexibility. The tests enable the generation of graphs where clear differences compared to static analyses can be observed.

This prototype represents an innovation in the field of materials engineering, as it reproduces dynamic flow conditions that simulate industrial environments, with potential applications in research, teaching, and technological development focused on analyzing metal resistance in corrosive environments.