Results 21 to 30 of about 38,396 (204)
Scientific Reports, 2020 Magnesium aluminate spinel (MgAl2O4) supported Co3O4 catalysts are synthesized and tested for the oxidative dehydrogenation (ODH) of ethylbenzene using CO2 as a soft oxidant.
Venkata Rao Madduluri +4 more
doaj +1 more source
Innovative Coating Method of MgAl2O4 or ZnAl2O4 on α-Al2O3 Spheric Nuclei [PDF]
Materials Research, 2015 Structured materials composed of α-Al2O3 spheres covered with a porous and thin layer of MgAl2O4 or ZnAl2O4 were obtained. The innovative coating method developed consists in the formation of a precursor gel of MgAl2O4 or ZnAl2O4 by citrate-nitrate ...
Graciela Mabel Baez +3 more
doaj +1 more source
Solid Earth Sciences, 2022 Raman spectroscopy, an ideal technique to quantify the Mg–Al cation distribution on the tetrahedral T-sites and octahedral M-sites of MgAl2O4-spinel, was not calibrated before.
Yunlu Ma +4 more
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The effect of Y2O3 addition on thermal shock behavior of magnesium aluminate spinel [PDF]
Science of Sintering, 2009 The effect of yttria additive on the thermal shock behavior of magnesium aluminate spinel has been investigated. As a starting material we used spinel (MgAl2O4) obtained by the modified glycine nitrate procedure (MGNP).
Pošarac Milica +4 more
doaj +1 more source
Effect of MgCl2 addition on the sintering behavior of MgAl2O4 spinel and formation of nano-particles [PDF]
Science of Sintering, 2014 In this paper, the effect of MgCl2 addition on the sintering behavior of MgAl2O4 spinel produced via oxide mixture method was investigated. For this reason, the stoichiometric mixture of magnesite and calcined alumina as raw materials was ...
Mohammadi F., Otroj S., Nilforushan M.R.
doaj +1 more source
Materials & Design, 2021 Polycrystalline magnesium aluminate spinel (MgAl2O4) is one of the most important structural ceramics with proven applications as a hard, temperature resistant material and as a high strength optical window.
D.M. Dewitt +3 more
doaj +1 more source
Grain refinement efficiency of a new oxide-containing master alloy for aluminium casting alloys [PDF]
, 2014 In this study, grain refinement efficiency of a new oxide master alloy based on MgAl2O4 was demonstrated on an A357 alloy. The grain size of the reference alloy was reduced by 50-60% with the addition of the master alloy and introduction of ultrasonic ...
Dmitry G. Eskin +7 more
core +1 more source
Non-stoichiometry in MgAl2O4 spinel
, 2010 Stoichiometric magnesium aluminate spinel, MgAl2O4, contains equimolar proportions of Al2O3 and MgO. Spinel can, however, exhibit significant deviations from this stoichiometric composition.
Gilbert, C. A. +4 more
core +4 more sources
Densification during hot-pressing of carbon nanotube–metal–magnesium aluminate spinel nanocomposites [PDF]
, 2007 The densification by hot-pressing of ceramic–matrix composites containing a dispersion of carbon nanotubes (CNT), mostly single-walled, is studied for the first time.
Lefèvre-Schlick, Florent +4 more
core +1 more source
Effect of 1 wt% LiF additive on the densification of nanocrystalline Y2O3 ceramics by spark plasma sintering [PDF]
, 2011 Densification of nanocrystalline cubic yttria (nc-Y2O3) powder, with 18 nm crystal size and 1 wt% LiF as a sintering additive was investigated. Specimens were fabricated by spark plasma sintering at 100 MPa, within the temperature range of 700–1500 °C ...
Estournès, Claude +7 more
core +1 more source