Novel Fabrication Method of FGM Containing Nano-Particles Centrifugal Mixed-Powder Method
One of the fabrication methods for functionally graded materials (FGMs) is a centrifugal method,which is an application of the centrifugal casting technique.In the method,a centrifugal force applied to a homogeneous molten composite assists the formation of the desired gradation.The compositional gradient is then achieved primarily by the difference in the centrifugal force produced by the difference in density between the molten metal and solid particles.The centrifugal method has the advantage that it is possible to fabricate large size products with low cost.However,disadvantage of the centrifugal method is the difficult for the gradual distribution of small particles.In this study,we proposed a novel fabrication method,centrifugal mixed-powder method,by which we can obtain FGMs containing nano-particle.On first of this processing,powder mixture of functional nano-particle and matrix material is inserted into rotating mold.After that,matrix ingot is melted in crucible and then the melt is poured into the rotating mold with powder mixture.At that time,powder of matrix material is melted by matrix melt poured from crucible.Finally,an FGM ring with functional nano-particles distributed on its surface is obtained.Using this processing method,Al-based FGMs containing TiO2 nano-particles or SiC particles on its surface were fabricated.
Centrifugal force nano-particle centrifugal mixed-powder method
Yoshimi Watanabe Hisashi Sato
Department of Engineering Physics, Electronics and Mechanics, Nagoya Institute of Technology,Gokiso-cho, Showa-ku, Nagoya, 466-8555, Japan
国际会议
The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))
哈尔滨
英文
751-756
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）