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Stoichiometric MgAl 2 O 4 spinel powders were synthesized by microwave assisted solid-state reaction (MWSSR powders) in a domestic microwave (MW) oven (2.45 GHz frequency, 700 W power) from aluminum tri-hydroxide and caustic MgO in the presence of carbon black (10-50 wt.% with respect to total raw mix). 20% C was found to be sufficient to produce spinel powder with 82% spinel content...
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