Characterization of MgAl2O4 sintered ceramics-Reference-Cited by-同舟云学术

Characterization of MgAl2O4 sintered ceramics

Published:2019 Issue:4 Volume:51 Page:363-376
ISSN:0350-820X
Container-title:Science of Sintering
language:en
Short-container-title:SCI SINTER

Author:

Obradovic Nina¹^ORCID,Fahrenholtz William²,Filipovic Suzana¹^ORCID,Corlett Cole²,Djordjevic Pavle¹,Rogan Jelena³,Vulic Predrag⁴^ORCID,Buljak Vladimir⁵,Pavlovic Vladimir¹

Affiliation:

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

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

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

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

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

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.

Funder

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

Publisher

National Library of Serbia

Subject

Materials Chemistry,Metals and Alloys,Condensed Matter Physics,Ceramics and Composites

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