以金属Al粉(w(Al)= 99%,粒度≤45 μm)、ZrO2粉(w(ZrO2)= 99%,粒度≤3.5 μm)和B2O3粉(w(B2O3)=98%,粒度≤5 μm)为原料,按n(Al) n(ZrO2) n(B2O3)=1033混合后装入高能球磨罐中,在氩气保护条件下以560 r·min-1的转速球磨2 h后,取样进行XRD和SEM分析.结果表明:采用金属Al粉、ZrO2和B2O3为原料,在2 h的较短时间内经高能球磨合成ZrB2-Al2O3复合粉体,其合成机理为机械碰撞诱发的自蔓延反应;所得到的复合粉体中,ZrB2为微米级,Al2O3为纳米级.
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