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以工业用NH4Al(SO4)2·12H2O和NH4HCO3为原料,采用化学沉淀法制备纳米Al2O3粉体。研究了pH值、乙醇、表面活性剂等因素对Al2O3粒子尺寸的影响,并探讨了几种反团聚的机理及效果

Nanometer Al2O3 powder was prepared by chemical precipitation technique using NH4Al(SO4)2 · 12H2O and NH4HCO3 as the starting materials. The influences of pH value, surface active agents and ethanol on the size of Al2O3 powder were investigated. The mechanism of several antiagglomeration measurements and their effects on podwer size were discussed.

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