用X-ray法研究了高能球磨制备Co-La2O3和Co-CeO2催化剂纳米粉末过程中Co粉的微观应力与球磨时间的关系,发现两种不同晶型的稀土氧化物对Co粉微观应力的影响不尽相同,掺La2O3的粉末球磨到15h之内时,Co粉的微观应力随球磨时间的增加而增加,但在15～55h这段范围,微观应力随球磨时间的延长而增加的趋势变缓.掺CeO2的Co粉的微观应力在研究时间范围内随球磨时间的增加几乎呈线性增加.
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