Preparation and Characterization of Multilayered Mullite/Mo Functionally Gradient Materials
Multilayered mullite/Mo cermet functionally gradient material (FGM) was fabricated through a powder stacking process and sintering in vacuum up to 1500℃.The composition distribution,microstructure and microhardness of the FGM were analyzed.The results indicated that the mullite/Mo FGM was well densified with composite graded distribution and there was no new phase appeared.The microhardness of the FGM increase from 467HV to 1543HV,the density from 2.919 to 7.106 g/cm3 as the content ofmullite increase from 20% to 80%.The relative density exceeded 90% as the content of mullite reached 80%.Thermal shock test showed that the cracks passed through the joint without deflection.
Mullite/Mo Functionally gradient materials Powder stacking Vacuum sintering
Shuheng Chen Linjiang Wang Xiangli Xie Ye Zhang
Key Laboratory of New Processing Technology for Nonferrous Metal and Materials,Ministry of Education Department of Chemistry and Engineering Materials,Guilin University of Technology,Guilin 541004,P.R.
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
1866-1868
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）