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以Mo、Fe及FeB粉为原料,利用原位反应真空烧结法制备了Mo2FeB2金属陶瓷,研究了添加不同含量的Cr、V等合金元素对材料组织及性能的影响。利用SEM、EDS、XRD等方法,探讨了合金元素的分布及相组成。结果表明,Cr、V在金属陶瓷硬质相及粘接相中都存在,均能细化Mo2FeB2晶粒,添加10wt%C、r2wt%N、i2wt%V时,陶瓷材料具有最佳综合力学性能,此时在硬度较高的条件下获得了最高的抗弯强度。
The Mo2FeB2 cermet was prepared by in-situ reaction vacuum sintering using Mo, Fe and FeB powders as raw materials. The effects of adding Cr, V and other alloying elements on the microstructure and properties were investigated. The distribution and phase composition of alloying elements were investigated by SEM, EDS and XRD. The results show that both Cr and V are present in both hard phase and cemented phase of cermets, which can refine Mo2FeB2 grains. When adding 10wt% C, r2wt% N and i2wt% V, the ceramic material has the best comprehensive mechanical properties , At this time under the conditions of higher hardness obtained the highest flexural strength.