RT Journal Article
T1 A Time Series Proposal Model to Define the Speed of Carbon Steel Corrosion in an Extreme Acid Environment
A1 Fortes Garrido, Juan Carlos
A1 Luís, Ana Teresa
A1 Santisteban Fernández, María
A1 Grande Gil, José Antonio
AB This article shows the behavior of the corrosive effect of acid mine water on carbonsteel metal alloys. Mining equipment, composed of various steel alloys, is particularlyprone to damage from highly acidic water. This corrosion results in material thinning,brittle fractures, fatigue cracks, and ultimately, equipment failure. For this purpose, a set ofcarbon steel metal plates similar to those found in mine facilities were immersed into mineleachates of an AMD (Acid Mine Drainage) polluted river from the Tharsis Mine (Huelva,Spain). In these leachates, physicochemical variations occur, directly correlated with thealterations produced in the metal plates, manifested with the appearance of dissolvedmaterials and particulate matter. Weight loss of up to 37 g in 30 weeks for plates of about140 grs occurred and an increase in EC up to 45.64 mS/cm from 5.40 mS/cm and an increasein TDS from 2600 mg/L to 17,100 mg/L. STATGRAPHICS Centurion, a powerful dataanalysis tool was used for performing the time series analysis that was used for the firsttime to statistically define the corrosion effects on metal alloys. As a result, a significantvariability in the physical and chemical factors of the leachates was observed due to theredox and precipitation–dissolution processes occurring within the system: an increase intotal dissolved solids (TDS), electrical conductivity (EC) and temperature (T) (the corrosionprocess is an exothermic reaction) and a decrease in pH. It was also demonstrated thatthe longer the exposure time, the plates noticeably lost more material and became furtherweakened. Finally, these results allowed the formulation of a simple algorithm to defineweight loss as a function of exposure time to acidic water.
PB MDPI
SN 1996-1944 (electrónico)
YR 2024
FD 2024-12
LK https://hdl.handle.net/10272/24735
UL https://hdl.handle.net/10272/24735
LA eng
NO Fortes, J. C., Luís, A. T., Santisteban, M., & Grande, J. A. (2024). A Time Series Proposal Model to Define the Speed of Carbon Steel Corrosion in an Extreme Acid Environment. In Materials (Vol. 18, Issue 1, p. 27). MDPI AG. https://doi.org/10.3390/ma18010027
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026