Preparation of Mg-W Graded Materials by Spark Plasma Sintering

摘要：

　　A new kind of functionally graded materials (FGM) with density gradient has come to show great potentials as flier-plates for creating quasi-isotropic compression waves.In order to meet the demand of lower density in the front face and wider density range for such flier-plate,Mg with a density of 1.74g/cm3 and W of 19.3g/cm3 are selected to make Mg-W system density graded materials.Mg-W alloys with various mass fractions of Mg and W were sintered by spark plasma sintering (SPS) technique at low temperatures,and the processing of densification is mainly investigated.It is found that,up to 92wt%W,the Mg-W alloys can be fully densified at 873K due to the conglutination of Mg particles.The Mg-W alloys still exist as a mechanical mixture of Mg and W.Finally,the Mg-W density graded materials with a density change from 1.74g/cm3 to 10.55g/cm3 have been successfully prepared.

关键词： Mg-W system Density graded material Spark plasma sintering Densification

作者: Qiang Shen Yinghu Liu Jing Zhou Guoqiang Luo Lianmeng Zhang

作者单位: State Key Lab of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,P.R.China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 1869-1871

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）