Preparation of Ti-Mo system functionally graded materials by co-sedimentation①
(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,
Wuhan University of Technology, Wuhan 430070, P.R.China)
Wuhan University of Technology, Wuhan 430070, P.R.China)
Abstract: A new kind of method, co-sedimentation method, was used to fabricate functional gradient material(FGM) in order to eliminate the interfaces in gradient materials. The deposit bodies obtained from the sedimentation of Ti and Moparticles were densified at 1673K under a pressure of 20MPa in flowing argon for 1h. Finally, Ti-Mo system FGM with continuous change of composition was successfully prepared. The results reveal that the sedimentation method is an effective way to manufacture FGM with continuous change of composition. Moreover, the results also show that the compositional gradient of FGM can be adjusted in a wide range through both particle size distribution and the ratio of powders.
Key words: co-sedimentation; functional gradient material; titanium-molybdenum