为了研究在较低的温度下制备α-Al2O3纳米粉体工艺路线,以Al(NO3)3·9H2O和NH3·H2O溶液为原料,经改进的沉淀反应和原位诱导结晶,制备了分散性能良好的α-Al2O3纳米粉体.用XRD、TEM等技术研究了产物的物相、组成和形貌.结果表明,改进的沉淀反应和原位诱导结晶相结合,可有效的降低煅烧温度.在900℃煅烧2h,即可得到尺寸分布均匀,结晶性好,分散性能良好的α-Al2O3纳米粉体.NH4NO3的存在对于α相交具有明显的促进作用.
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