The effect of Mo₂C additions to a NbC-12vol%Ni-0.5vol%WC material on sintering at 1450 °C and on the resulting microstructure was investigated by replacing different amounts of NbC with Mo₂C (0%, 3%, 6% or 9% in volume) and by performing interrupted tests at key temperatures (1080 °C, 1180 °C and 1320 °C). Chemical reactions and phase transformations were followed by Thermogravimetric Analysis (TGA) and sintering behavior by dilatometry. The microstructure was studied by Scanning and Transmission Electron Microscopy (SEM and TEM), Energy Dispersive Spectrometry (EDS) and X-ray diffraction (XRD). It is observed that Mo₂C and WC particles, present at the onset of solid state sintering, delay the shrinkage of the material. An increase of hardness with Mo₂C addition is measured, mainly due to grain refinement.

通过在1450°C下烧结NbC-12vol％Ni-0.5vol％WC材料中的Mo ₂ C烧结及其对所得的微观结构的影响，通过用Mo ₂ C（0％，3％，体积的6％或9％），并在关键温度（1080°C，1180°C和1320°C）下进行间断测试。化学反应和相变后进行热重分析（TGA），并通过热膨胀法进行烧结。通过扫描和透射电子显微镜（SEM和TEM），能量色散谱（EDS）和X射线衍射（XRD）研究了微观结构。观察到，在固态烧结开始时存在的Mo ₂ C和WC颗粒会延迟材料的收缩。钼增加硬度测量了₂ C的添加，主要是由于晶粒细化。