Preparation of AlB12 Powder by Self-Propagating High-Temperature Synthesis (SHS)

Self-propagating high-temperature synthesis (SHS) process is used to prepare AlB₁₂. The phase analysis results of preparing AlB₁₂ with Al and B₂O₃ as raw materials show that: under air and argon conditions, the self-propagating and acid-washed self-propagating powders all have α-Al₂O₃ impurities; Mg, Al and B₂O₃ are used as raw materials. The phase analysis results of the preparation of AlB₁₂ show that under argon conditions, the self-propagating and acid-washed self-propagating powder has unremovable MgAl₂O₄ impurities; the root cause of the low purity of AlB₁₂ prepared by the self-propagating method is that there are unremovable impurities exist.