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以金属Al粉(w(Al)=99%,粒度≤45μm)、ZrO2粉(w(ZrO2)=99%,粒度≤3.5μm)和B2O3粉(w(B2O3)=98%,粒度≤5μm)为原料,按n(Al)∶n(ZrO2)∶n(B2O3)=10∶3∶3混合后装入高能球磨罐中,在氩气保护条件下以560r.min-1的转速球磨2h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2h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。
(Al 2 O 3) with a particle size of ≤45μm and a powder of Al 2 O 3 (w (Al 2 O 3) = 99% As raw materials, according to n (Al): n (ZrO2): n (B2O3) = 10: 3: 3 mixed high energy ball mill tank, under argon protection conditions 560r.min-1 speed milling 2h , Sampled for XRD and SEM analysis. The results show that the synthesis mechanism of ZrB2-Al2O3 composite powders is mechanical self-propagating reaction by using high-energy ball milling in a short time of 2 h using Al powder, ZrO2 and B2O3 as raw materials. , ZrB2 is micron, Al2O3 is nanoscale.