烧结气氛对Ti(CN)基金属陶瓷饱和磁化强度的影响

Influence of Sintering Atmosphere on the Saturation Intensity of the Ti(CN)Base Ceramets

用X射线衍射、电子背散射像、钴磁仪和矫顽磁力计分析研究了烧结气氛(真空,N2,Ar)对Ti(C,N)基金属陶瓷合金的化学成分、饱和磁化强度和矫顽磁力的影响。结果表明:金属陶瓷混合料压坯在Ar气、真空、N2气等3种不同的气氛中烧结后,相应合金的碳、氮、氧总量依次增加,相应合金中粘结相的晶格常数依次减小,饱和磁化强度依次增大。Ar气和N2气烧结造成金属陶瓷合金的组织结构不均匀,N2气烧结影响更大,矫顽磁力出现异常。钴磁和矫顽磁力可以作为金属陶瓷合金化学成分和组织结构变化的一个判据。

The effects of sintering atmospheres （vacuum, N2, Ar） on the chemical composition, saturation intensity and coercive force were studied by using X-ray diffraction, electrons back scattered images, Co-% magnetism meter and coercive force meter for the Ti（CN） base ceramets. The test results indicated that the total amount of the C, N, O and the saturation intensity were increased, but the lattice constant of binder phase was decreased in the corresponding alloy after the green compacts of Ti（CN） base ceramets were sintered in Ar, vacuum, N2, respectively. It caused a non-uniform construction if sintering in Ar and N2; even more influence in N2, resulting in a disorder coercive force. The values of Co-% magnetism and coercive force could be used as a criterion of the change of chemical composition and structure.