Desenvolvimento de um sistema para realização de ensaios de corrosão com erosão em condições de fluxo bifásico com impacto de partículas sólidas

Abstract

Corrosion and erosion are synergistic degradation mechanisms that compromise the integrity and durability of metallic materials in harsh industrial environments. This study aims to develop and validate an experimental system for conducting erosion-corrosion tests under biphasic flow conditions with solid particle impingement. The system was designed to operate with varying mass-to-volume ratios of abrasive particles in aqueous solution, simulating fluid transport scenarios commonly found in petrochemical, mining, and sanitation industries. The experimental setup was improved by replacing a centrifugal pump with a diaphragm pump to ensure equipment reliability under abrasive conditions. Tests were performed on SAE 1020 steel samples using fine construction sand with a controlled grain size (180-300 μm), under different time cycles and particle concentrations. Mass loss was monitored according to ASTM G1-03 standards, allowing the quantification of material degradation rates. The results show that the new system configuration is effective in simulating erosion-corrosion phenomena, providing reliable and reproducible data. This experimental system proved to be a promising tool for future assessments of protective coatings and materials, expanding the research capabilities of the laboratory.