Mechanochemical Synthesis of Magnesium Aluminate Spinel Powder at Room Temperature |
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Authors: | Daniela Domanski Guillermina Urretavizcaya Facundo J Castro Fabiana C Gennari |
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Affiliation: | Centro Atómico Bariloche, Comisión de Energía Atómica (CNEA), R8402AGP Bariloche, Argentina |
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Abstract: | MgAl2O4 spinel was successfully synthesized using a mechanochemical route that avoided the formation and calcination of its precursors at high temperatures. The method involved a single step in which γ-Al2O3–MgO, AlO(OH)–MgO, and α-Al2O3–MgO mixtures were milled at room temperature under air atmosphere. The formation of MgAl2O4 occurred faster with γ-Al2O3 than with AlO(OH) or α-Al2O3. After 140 h, the mechanochemical treatment of the γ-Al2O3–MgO mixture yielded 99% of MgAl2O4. |
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Keywords: | mills/milling spinels refractories synthesis aluminates |
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