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以(Ti,W,Mo,Nb)(C,N)-(Co,Ni)基金属陶瓷材料为研究对象,研究烧结温度对金属陶瓷的成分、微观组织和力学性能的影响,初步探讨成分、微观组织与材料强度的关系.结果 表明:烧结温度对(Ti,W,Mo,Nb)(C,N)-(Co,Ni)基金属陶瓷组织特征有显著的影响;合金的总碳含量随着烧结温度的提高而降低,当烧结温度达到1490℃时,合金总碳的急剧降低,导致合金组织中出现脱碳相(η相),从而使得合金的硬度(HV30)、断裂韧性(KIc)和抗弯强度(TRS)降低;1470℃烧结温度下,(Ti,W,Mo,Nb)(C,N)-(Co,Ni)基金属陶瓷合金的HV30、KIC和TRS的匹配最佳,在实际应用工况下的综合切削性能最优.“,”Dense Co-and Ni-bonded Ti(C0.6N0.4) matrix cermets with secondary carbides,i.e.,WC,Mo2C,and NbC,were prepared by liquid phase sintering in vacuum for 60 min at temperatures ranging from 1410 to 1490 ℃.The detailed microstructural and phase analysis was performed by scanning electron microscopy,electron probe microanalysis,and X-ray diffraction.The effect of sintering temperature on the microstructure,mechanical properties,and machining performance of cermets was investigated.The results show that sintering temperature has a significant impact on the microstructural characteristics of (Ti,W,Mo,Nb)(C,N)-(Co,Ni) cermets.The total carbon content of cermets decreases with increasing the sintering temperature and a carbon-deficient phase (M6C) is observed in the cermet sintered at 1490 ℃.The cermets sintered at temperatures of up to 1470 ℃ are composed of an fcc solid solution metal binder and two types of core-rim structured grains,i.e.,cubic carbide solution and cubic Ti(C,N) solution phases.The best machining performance on continuous/interrupted turning is found in the cermet sintered at 1470 ℃ because of an optimum combination of hardness and transverse rupture strength.