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采用热台显微镜（HSM）技术．直接观测了H2／Ar气氛中还原时磁铁矿表面显微结构的变化，探讨了不同条件下，铁核不同的形核、长大模式及平均长大速度结果表明、773—1373K温度范围内，在所研究的气氛条件下，主要有四种不同特征的核形貌及相应的核长大模式，各种形貌之间的相互转化以及核的平均长大速度与还原温度和氢分压有关
Hot Stage Microscopy (HSM) technology is used. The changes of the microstructure on the surface of magnetite during H2 / Ar atmosphere reduction were directly observed. The different nucleation and growth patterns and the average growth velocity of iron nuclei under different conditions were discussed. The results show that in the temperature range of 773-1373K, , Under the studied atmosphere conditions, there are four main features of the nuclear morphology and the corresponding nuclear growth mode, the transformation between the various morphologies and the average growth rate of nuclear and reducing temperature and hydrogen partial pressure related