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论述了超细羰基镍粉末在室温条件下贮存一段时间后,粉末的比表面积值下降的原因,一方面是由于经贮存后粉末的粒度组成发生变化。粉末中小粒度组份的大量消失。另一方面是由于粉末的颗粒表面状态发生变化所引起的。颗粒表面原子的迁移导致了粉末颗粒表面状态的改变。并描述了粉末颗粒表面原子的迁移模型。
The reasons for the decrease of the specific surface area of the powder after the nickel carbonyl powder is stored at room temperature for a period of time are discussed. The reason is that the particle size composition of the powder changes after storage. A large number of small and medium-sized powder components disappear. On the other hand, due to the change of the particle surface state of the powder. The migration of the particle surface atoms leads to a change in the surface state of the powder particles. The migration model of atom on the surface of powder particles is described.