Research and Development of Novel Refractory of MgO Doped with ZrO2 Nanoparticles for Copper Slag Resistance

被引：19
作者：
Gomez-Rodriguez, Cristian [1 ]
Antonio-Zarate, Yanet [1 ]
Revuelta-Acosta, Josept [1 ]
Verdeja, Luis Felipe [2 ]
Fernandez-Gonzalez, Daniel [2 ]
Lopez-Perales, Jesus Fernando [3 ]
Rodriguez-Castellanos, Eden Amaral [3 ]
Garcia-Quinonez, Linda Viviana [4 ]
Castillo-Rodriguez, Guadalupe Alan [3 ]
机构：
[1] Univ Veracruz Coatzacoalcos, Fac Engn, Av Univ Km 7-5 Col Santa Isabel, Coatzacoalcos 96535, Mexico
[2] Univ Oviedo, Dept Mat Sci & Met Engn, Oviedo 33003, Spain
[3] Autonomous Univ Nuevo Leon, Fac Mech & Elect Engn, San Nicolas De Los Garza 66450, Nuevo Leon, Mexico
[4] Ctr Sci Res & Higher Educ Ensenada CICESE Monterr, Catedras CONACYT, Apodaca 66603, Mexico
来源：
MATERIALS | 2021年 / 14卷 / 09期
关键词：
ceramic composites; corrosion; zirconia; nanoparticles; MgO refractories; SMELTING SLAGS; PERFORMANCE IMPROVEMENT; DEGRADATION MECHANISMS; PHYSICAL-CHEMISTRY; CAO REFRACTORIES; LOSSES; CEMENT; MICROSTRUCTURE; DENSIFICATION; FURNACE;
D O I：
10.3390/ma14092277
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This study investigates the corrosion mechanism on 100 wt.% MgO and 95 wt.% MgO with 5 wt.% nano-ZrO2 ceramic composites. First, MgO powder and powder mixtures (MgO + nano ZrO2) were uniaxially and isostatically pressed; then, they were sintered at 1650 degrees 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 ZrO2 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-ZrO2, mainly due to the dissolution of MgO grains during the chemical attack by copper slag.
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页数：13
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