caa a22 4500 463228421 CHVBK 20180405153234.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10853-007-1546-5 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1546-5 Effect of in situ spinel seeding on synthesis of MgO-rich MgAl2O4 composite [Elektronische Daten] [Deepak Mohapatra, Debasish Sarkar] MgO-rich MgAl2O4 spinel was prepared by adopting solid-state reaction of commercially available sintered seawater magnesia and α-alumina. Starting materials were mixed in weight ratio (Al2O3: MgO) of 1:1, 1:1.1, 1:1.2, 1:1.3, 1:1.4, where the developed MgAl2O4 spinel crystal seed in calcined powder varied (5-50%) with respect to addition of MgO content and temperature. Around 70% spinellisation could be noticed in Al2O3: MgO (1:1) batch through double stage sintering. Densification and grain size of the sintered specimen was found to be greatly dependent on initial calcination temperature and content of primary spinel seed. The diametrical compressive strength of sintered specimen was ∼115MPa for highest amount of spinel content. The hardness of MgO-rich spinel composite was varied with spinel addition. Springer Science+Business Media, LLC, 2007 Mohapatra Deepak Department of Ceramic Engineering, National Institute of Technology, 8, Rourkela, Orissa, India aut Sarkar Debasish Department of Ceramic Engineering, National Institute of Technology, 8, Rourkela, Orissa, India aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/17(2007-09-01), 7286-7293 0022-2461 42:17<7286 2007 42 10853 https://doi.org/10.1007/s10853-007-1546-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1546-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mohapatra Deepak Department of Ceramic Engineering, National Institute of Technology, 8, Rourkela, Orissa, India aut NATIONALLICENCE 700 1- Sarkar Debasish Department of Ceramic Engineering, National Institute of Technology, 8, Rourkela, Orissa, India aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/17(2007-09-01), 7286-7293 0022-2461 42:17<7286 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer