超高压力下通电烧结制备钨铁功能梯度材料  

Fabrication of tungsten/iron functionally graded materials by resistance sintering under ultra-high pressure

作　　者：屈丹丹[1] 周张健[1] 谈军[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《北京科技大学学报》2011年第7期852-855,共4页Journal of University of Science and Technology Beijing

基　　金：国家磁约束核聚变能研究专项基金资助项目(No.2010GB109000)

摘　　要：采用超高压力下通电烧结技术制备了钨体积分数为0%、25%、50%、75%和100%的钨铁功能梯度材料.研究了材料组分和工艺参数对W/Fe功能梯度材料的显微形貌及力学性能的影响.结果表明:当施加压力为9 GPa,通电功率为11 kW,通电时间60 s时可以获得相对密度大于98%的钨铁功能梯度材料,其组分分布与设计成分保持一致.ungsten/iron functionally graded materials（FGM）,in which the volume fractions of tungsten are 0%,25%,50%,75% and 100% respectively,were produced by resistance sintering under ultra high pressure.The effects of components and preparation parameters on the microstructure and mechanical properties of W/Fe FGM were analyzed.It is shown that W/Fe FGM,whose relative density reaches more than 98%,can be obtained at a pressure of 9 GPa and an input power of 11 kW for 60s so that the elemental composition distribution is in agreement with the designed.

关 键 词：功能梯度材料 钨 铁 超高压力 通电烧结 

分 类 号：TB34[一般工业技术—材料科学与工程]