Self-Propagating High-Temperature Synthesis of Y2O3 Powders from Y(NO3)3x(CH3COO)3(1-x)•nH2O

We have studied the self-propagating high-temperature synthesis (SHS) of yttrium oxide from Y(NO3)(3x)(CH3COO)(3(1-x)) center dot nH(2)O (0.3 <= x <= 0.7) acetate nitrates, calculated their standard enthalpies of formation using the method of valence states of atoms in a chemical compound, and compared calculated and experimentally determined yttrium oxide SHS temperatures. Using thermogravimetry and differential scanning calorimetry data and thermodynamic analysis, we have determined the optimal range of yttrium acetate nitrate compositions for the SHS of Y2O3 powder.