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.
出处
《钢铁钒钛》
CAS
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)。
关键词
原位生成
固相烧结
颗粒增强
复合材料
in-situ synthesis
solid phase sintering
particulates reinforced
composite
