RT Journal Article
T1 Thermal Oxidative Degradation of Pure Cu2S and Industrial White Metal
A1 Díaz Blanco, Manuel Jesús
A1 Parra Figueroa, Roberto
A1 Balladares Varela, Eduardo R.
A1 Jerez Riveros, Oscar
A1 Cueva Cerda, Matias
A1 Moreno-Ventas Bravo, Ignacio
A1 Vázquez Vázquez, Marta
AB The kinetics of the thermal oxidation of white metal and Cu2S have been studied by thermogravimetric analysis (TG), which was carried out under atmospheric oxidative conditions (O2 100%) with heating rates of 5, 10, 15 and 20 °C min−1. Each experiment was performed three times, the indicated values being the average of the three experiments. The experimental data were evaluated using isoconversional models based on the Arrhenius equation. The models are constructed using first-order mechanisms in the reactions and therefore, since most of them present adequate regression coefficients, it can be verified that order 1 is the most predominant order among the reactions found. In addition, the Kissinger–Akahira–Sunose model, which has the highest regression coefficient, is considered to be the most optimal. Similar behavior was recorded between Cu2S and white metal, as well as a similar regular increase in the apparent activation energy (Ea) of 10–30 kJ mol−1 for both materials. The reactions that took place during the oxidation of white metal and Cu2S were determined using a computational model based on thermodynamics developed in this work. The identified phases include CuSO4, Cu2SO4, Cu2O, CuO, CuO·CuSO4.
PB Springer
SN 2731-8397
SN 2731-8400 (electrónico)
YR 2023
FD 2023
LK https://hdl.handle.net/10272/23682
UL https://hdl.handle.net/10272/23682
LA eng
NO Vázquez Vázquez, M., Blanco, M. J. D., Figueroa, R. A. P., Varela, E. R. B., Riveros, O. J., Cerda, M. C., & Bravo, I. M.-V. (2023). Thermal Oxidative Degradation of Pure Cu2S and Industrial White Metal. In High Temperature Corrosion of Materials (Vol. 100, Issues 3–4, pp. 209–225). Springer Science and Business Media LLC. https://doi.org/10.1007/s11085-023-10169-z
NO Funding for open access charge: Universidad de Huelva / CBUA
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026