Improvement of Mullite and Magnesia‐Based Refractory Castables Through Addition of Nano‐Spinel Powder
Source abstract
Abstract
Two different commercial refractory castables based on mullite or magnesia aggregates have been improved through addition of 0–25 wt.% nano‐magnesium aluminate spinel ( MA ) powder. Physico‐mechanical and refractory properties were tested at different firing temperatures. The phase composition, thermal analysis, and microstructure of these refractory castables were detected using X‐ray diffraction ( XRD ), differential thermal analysis ( DTA ), as well as scanning electron microscope ( SEM ) attached with energy dispersive X‐ray unit, respectively. The castable sample mix containing 10 wt.% nano‐ MA spinel powder was chosen as an optimum composition according to its good sintering, mechanical as well as refractory properties.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Layered Double Hydroxides Synthesis and Applications · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Refractories, Ceramics and Building Materials Department National Research Centre Dokki Cairo Egypt
Refractory & Ceramic Materials Division (RCMD) Central Metallurgical, R&D Institute (CMRDI) P.O. Box 87 Helwan 11421 Cairo Egypt
Chemistry Department Faculty of Science Sebha University Sebha P. Box 625 Libya
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