The microstructure evolution of MoJeBo-based cermet was studied at different sintering temperatures and dwell times by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that the Mo^FeB^ grain, which is formed at the stage of solid phase sintering, exhibits equiaxed morphology. With the increase of sintering temperature, the aggregation of binder phase is decreased, the microstructure gradually becomes uniform; the columnar grain of hard phase grows, and the solid solubility of Mo element in binder phase is increased. A part of hard phase grain appears abnormal growth during the high temperature dwell stage, and the abnormal growth of the grain is always accompanied by the grain coalescence.%本文运用XRD和SEM等研究了不同烧结温度和保温时间下Mo2FeB2基金属陶瓷显微组织演变规律.结果表明:Mo2FeB2硬质相在固相烧结阶段生成,其颗粒形貌为等轴状.在液相烧结过程中随烧结温度的升高,粘结相团聚程度逐渐降低,组织逐渐均匀；同时硬质相颗粒柱状生长,粘结相中Mo元素固溶量增加.高温保温过程中,部分硬质相颗粒出现异常长大,异常长大的大颗粒总是伴随着颗粒合并.
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