GS0504-419 Development and high-temperature strength evaluation of multi layered and functionally graded materials by using binder gradient composition

Abstract

Ni/ZrO_2 multi layered and functionally graded materials (FGMs) with high heat resistance are developed with a powder molding. High-temperature strength of the FGMs are measured. Binder gradient is used for reducing thermal stress in the FGMs. Five kinds of the compounds with various compositions are obtained by mixing Ni powder and ZrO_2 powder with a binder which includes wax and a thermoplastic resin. The compound with higher amount of Ni has higher amount of the binder. The five layered FGMs are made from the compounds. The creep rupture tests are carried out for the FGMs using free plasma jet equipment at about 2000 K. Ni/ZrO_2 FGMs can be developed and their high-temperature strength can be evaluated.