| Autor: |
Gómez-Rodríguez C; Faculty of Engineering, University of Veracruz (Coatzacoalcos), Av. Universidad km 7.5 Col. Santa Isabel, Coatzacoalcos 96535, Mexico., Antonio-Zárate Y; Faculty of Engineering, University of Veracruz (Coatzacoalcos), Av. Universidad km 7.5 Col. Santa Isabel, Coatzacoalcos 96535, Mexico., Revuelta-Acosta J; Faculty of Engineering, University of Veracruz (Coatzacoalcos), Av. Universidad km 7.5 Col. Santa Isabel, Coatzacoalcos 96535, Mexico., Verdeja LF; Department of Materials Science and Metallurgical Engineering, University of Oviedo, 33003 Oviedo/Uviéu, Spain., Fernández-González D; Department of Materials Science and Metallurgical Engineering, University of Oviedo, 33003 Oviedo/Uviéu, Spain., López-Perales JF; Faculty of Mechanical and Electrical Engineering, Autonomous University of Nuevo Leon, San Nicolás de los Garza 66450, Mexico., Rodríguez-Castellanos EA; Faculty of Mechanical and Electrical Engineering, Autonomous University of Nuevo Leon, San Nicolás de los Garza 66450, Mexico., García-Quiñonez LV; Catedras-CONACYT, Center Scientific Research and Higher Education of Ensenada (CICESE) Monterrey, Apodaca 66603, Mexico., Castillo-Rodríguez GA; Faculty of Mechanical and Electrical Engineering, Autonomous University of Nuevo Leon, San Nicolás de los Garza 66450, Mexico. |
| Abstrakt: |
This study investigates the corrosion mechanism on 100 wt.% MgO and 95 wt.% MgO with 5 wt.% nano-ZrO 2 ceramic composites. First, MgO powder and powder mixtures (MgO + nano ZrO 2 ) were uniaxially and isostatically pressed; then, they were sintered at 1650 °C. Corrosion by copper slag was studied in sintered samples. Physical properties, microstructure, and penetration of the slag in the refractory were studied. Results reveal that ZrO 2 nanoparticles enhanced the samples' densification, promoting grain growth due to diffusion of vacancies during the sintering process. Additionally, magnesia bricks were severely corroded, if compared with those doped with nano-ZrO 2 , mainly due to the dissolution of MgO grains during the chemical attack by copper slag. |
