原位生成超细VC颗粒增强铁基复合材料  

In-situ Synthesis VC Particulates to Reinforce Iron Matrix Composite

作　　者：程凤军[1] 王一三[1] 赖丽[1] 石建国[1] 王静[1] 丁义超[1] 杨廷贵[1] 

机构地区：[1]四川大学制造学院,四川成都610065

出　　处：《钢铁钒钛》2005年第2期58-61,共4页Iron Steel Vanadium Titanium

基　　金：国家科技部中小型企业创业基金资助项目(01C26225100955)。

摘　　要：用SEM、XRD检测VC颗粒增强复合材料的相和组织结构,证实了在较低温度下石墨有促进σ-FeV相分解的作用并分析了其原因。讨论了烧结温度对VC颗粒大小和分布的影响,在850℃固相烧结时,钒的碳化反应能够完成,而且VC颗粒不易长大,原位生成小于0.5μm的超细晶粒。<Abstrcat>The microstructure and the phases in composite were examined by means of SEM and XRD. It was confirmed that graphite had a function to accelerate the decompose of σ-FeV in lower temperature, and the courses were explained. The effects of sintering temperature on the distribution and size of VC were discussed. The carburising reaction of V to form VC take place under solid phase sintering at 850 ℃, and the in-situ synthesis VC particulate is fine, so the size is smaller than 0.5 μm.

关 键 词：原位生成 固相烧结 颗粒增强 复合材料 

分 类 号：TB331[一般工业技术—材料科学与工程]