Abstract
One of the fabrication methods for functionally graded materials (FGMs) is a centrifugal solid-particle method, which is an application of the centrifugal casting technique. However, it is the difficult to fabricate FGMs containing nano-particles by the centrifugal solid-particle method. Recently, we proposed a novel fabrication method, which we have named the centrifugal mixed-powder method, by which we can obtain FGMs containing nano-particles. Using this processing method, Cu-based FGMs containing SiC particles and Al-based FGMs containing TiO2 nano-particles on their surfaces have been fabricated. In this article, the microstructure and mechanical property of Cu/SiC and Al/TiO2 FGMs, fabricated by the centrifugal mixed-powder method are reviewed.
Highlights
Graded materials (FGMs) provide a reasonable compromise in terms of the properties of materials that would not be achieved otherwise
A wide variety of available processes have been reported for Functionally graded materials (FGMs) fabrication, such as plasma spraying, powder metallurgy, physical vapor deposition (PVD), chemical vapor deposition (CVD), and so on [1,2,3]
From the results described in this article, it is clear that centrifugal mixed-powder method is an effective method for fabrication of FGMs containing nano-particles
Summary
Graded materials (FGMs) provide a reasonable compromise in terms of the properties of materials that would not be achieved otherwise. Seen from a different angle, it is possible to create a compositional gradient utilizing this difference in material density [7,8,9]. This is the typical concept of a centrifugal method. The compositional gradient is achieved primarily by the difference in the centrifugal force produced by the difference in density between the molten metal and solid particles.
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