Preparation of Mg-W Graded Materials by Spark Plasma Sintering
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.
Mg-W system Density graded material Spark plasma sintering Densification
Qiang Shen Yinghu Liu Jing Zhou Guoqiang Luo Lianmeng Zhang
State Key Lab of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,P.R.China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1869-1871
2007-05-10(万方平台首次上网日期,不代表论文的发表时间)