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This article was prepared by vacuum sintering method moderate mechanical properties of Ti (C, N) Fund is a ceramic matrix material and material double glow plasma carburization and solid carburizing treatment, is formed in the Ti (C, N) Fund is a ceramic surface gradient structure. X-ray diffraction instrument (XRD), scanning electron microscopy (SEM), X-ray spectroscopy (EDS), transmission electron microscopy (TEM), and other experimental means to systematically study the Ti (C, N) Fund is a ceramic matrix material, gradient structure Ti the relationship between the (C, N) Fund is a ceramic preparation process, organizational structure and performance. First overview of Ti (C, N) Fund is a of ceramic development overview and research progress, summarizes the Ti (C, N) Fund is a ceramic composition and sintering technology of Ti (C, N) fund is the impact of the microstructure and properties of ceramics, then summarized the research profile of the gradient structure of cemented carbide and cermet. On this basis, has pointed out that the purpose and significance of this study. Cooling method, the toner add volume and binder phase content of Ti (C, N) Fund is a ceramic microstructure and performance. The results show that: the liquid phase sintering insulation stairs slowly cooled with the furnace, better cermet mechanical properties; adding the right amount of toner, not only to improve the metal-bonded phase Ni wettability of rigid particles, can also reduce the Ti , the degree of solid solution of Mo and W alloy elements in the metal bonding phase. C is added in an amount of 1.0 wt% can be obtained when the preferred microstructure and high mechanical properties; as the Ni content increases, the cermet uniform microstructure refinement, the hardness of the cermet is gradually reduced, while the flexural strength then gradually increases. Double glow plasma carburizing process parameters and substrate toner add the amount of Ti (C, N) funds affect the case of the structure and properties of the ceramic microstructure. The results show that: double glow plasma carburized material surface poor bonding, carburizing treatment of the sample surface hardness is improved, has little effect on the bending strength. Same carburization temperature, the relative thickness of the layer of the surface lean caking extended with the carburizing time and thickening; thicker the layer when the same carburizing time, carburizing temperature higher, the formation of lean caking phase. Surface depleted layer of binder phase growth by the metal element migration control, but its growth rate does not follow the parabolic law. In 1200 ℃ carburized 180min C added amount of 1.0wt.% Ti (C, N) base metal ceramic 0wt.% Of the amount of added C depleted bonded phase thickness. Lean caking phase layer is inside the Ti element is expressed by the carburization process storey carbon activity driven outward migration of carbon atoms formed by the reaction. Solid carburization of Ti (C, N) funds affect the case of the structure and mechanical properties of the ceramic microstructure. The results show that at 1350 ℃ solid carburizing processing 240min, about 20μm is formed in the surface of the metal-ceramic depleted bonding phase layer to improve the surface hardness of the metal ceramics, but the bending strength is significantly decreased.
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