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Thermal Stress Analysis of Functuonally Graded Ceramic/Metal Composites(I)-Plasma Spraying Material-

경사기능성 세라믹/금속 복합재료의 열응력 해석(1)-플라즈마 용사재-

  • Published : 1997.01.01

Abstract

A traditional notion of composites has been composed as a uniform dispersoid, but now it is proposed without regard to such rule with process development. Functionally Graded Material(FGM) consists of a new material design that is to make intentionally irregular dispersion state. In this study, thermal stress analysis of plasma spraying PSZ/NiCrAlY gradient material was conducted theoretically using a finite-element program. A formations of the model are direct bonding material(NFGM) and FGM with PSZ and NiCrAlY component element. The temperature conditions were $700^{\circ}C$ to 1100.deg. C assuming a cooling-down precess up to room temperature. Fracture damage mechanism was analyzed by the parameters of residual stress.

Keywords

Functionally Graded Material;Thermal Stress;Finite Element Analysis;Plasma Spraying;Delamination;Vertical Crack;Fracture Mechanism