反应烧结合成碳化钒颗粒增强铁基复合材料
VCP-reinforced Iron Matrix Composites Produced by Sintering Synthesis
江书勇1, 徐小玉2, 朱国女2
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作者单位：(1. 成都电子机械高等专科学校 国家实训基地, 四川 成都 610031; 2. 西安铁路局 兴平养路机械厂, 陕西 兴平 713100)
中文关键字：原位合成； VC/Fe复合材料； 微观组织
英文关键字：in-situ synthesis; VC/Fe composites; microstructure
中文摘要：以铬铁粉、钼铁粉、钒铁粉、铁粉和碳黑为原料，原位反应合成了VC-Fe基复合材料，并用扫描电镜、X射线衍射等测试方法对试样进行了组织结构分析。结果表明：在真空中烧结后，反应合成的复合材料主要相组成为V8C7 和α-Fe；在氮气中烧结后，复合材料主要相组成为V(C，N)和γ-Fe；与VC相比，硬质相V(C，N)分布更均匀，颗粒形状趋于球形。
英文摘要：VC/Fe composite was in-situ synthesized by sintering compacts of mixed ferrochromium, ferromolybdenum, iron and carbon black powders. The microstructure of the composite was investigated using X-ray diffraction and scanning electron microscope. The results show that the composites sintered in vacuum mainly consist of V8C7 particles and α-Fe. The composites sintered in nitrogen consist of V(C,N) particles and γ-Fe. Compared with VC particles, V(C,N) particles exhibit more homogeneous distribution in the matrix and their shapes are round.