Fabrication of functionally graded materials by centrifugal slurry-pouring method and centrifugal mixed-powder method

Abstract

Functionally graded materials (FGMs) are a new class of materials whose compositions change from one surface to another surface. FGMs can be fabricated under a centrifugal force. Fabrication methods of FGMs under the centrifugal force are classified into three categories, namely centrifugal method (application of centrifugal casting), centrifugal slurry method and centrifugal pressurization method (simple pressurization by the centrifugal force). We are developing a centrifugal slurry-pouring method and centrifugal mixed-powder method, which are classified into the latter two categories, and they are combination of centrifugal method and powder metallurgy. In this article, some recent results from the centrifugal slurry-pouring method and centrifugal mixed-powder method will be described.