DataVXScience of SinteringPaper
journal article·2019Open access

Characterization of MgAl2O4 sintered ceramics

Nina Obradovic, William Fahrenholtz, Suzana Filipovic, Cole Corlett, Pavle Djordjevic, Jelena Rogan, Predrag Vulic, Vladimir Buljak, Vladimir Pavlovic

Science of Sintering· Volume 51· Issue 4
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Source abstract

Abstract

Single phase MgAl2O4 was made from a one-to-one molar ratio of MgO and Al2O3 powders mixed using ball-milling. Mixtures of MgO and Al2O3 were subsequently treated in planetary ball mill for 30, 60, 90 and 120 minutes in air. The aim of this study was to examine phase composition, microstructure, and densification behavior of sintered specimens. After sintering in dilatometer at 1500?C, the powder was converted to single phase MgAl2O4. The results show that mechanical activation improved the densification behavior of MgAl2O4 sintered specimens, and it reduced the onset temperature for sintering by approx. 100?C. Based on dilatometer data, powders were subsequently densified at 1450?C by hot pressing. Almost ?ll specimens exhibited full density, while sample activated for 30 minutes showed the fastest densification rate.
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Research context

Ceramics & glasses

OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Microwave Dielectric Ceramics Synthesis

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Affiliations

Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade, Serbia

Materials Science and Engineering, Missouri University of Science and Technology, Rolla, Missouri, United States

Department of General and Inorganic Chemistry, Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia

Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia

Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Serbia

Funding

Ministry of Education, Science and Technological Development of the Republic of Serbia

References

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