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Effect of functionally graded material layers on the residual stress of polytypoidally joined Si3N4-Al2O3

Title
Effect of functionally graded material layers on the residual stress of polytypoidally joined Si3N4-Al2O3
Author
이선영
Keywords
functionally graded material (FGM); sialon polytypoid; thermal stress; electron probe X-ray microanalysis (EPMA)
Issue Date
2006-10
Publisher
ELSEVIER SCIENCE SA
Citation
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v. 434, No. 1-2, Page. 160-165
Abstract
A unique approach introducing sialon polytypoids as a functionally graded material (FGM) bonding has been used to join silicon nitride and alumina. The various multilayered FGM samples ranging from 3 to 20 layers were sintered to fabricate a crack-free joining of heterogeneous ceramics. To calculate thermal stresses for the various multilayered FGM samples, the finite element analysis program (FEAP) was used. These analyses results matched experimental results and showed why some samples had large residual stresses that resulted in fracture. Moreover, the electron probe X-ray microanalysis (EPMA) from a crack-free FGM sample had a smooth concentration profile, which verifies the interface diffusion during sintering at each graded layer and confirms a successful joining. (c) 2006 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0921509306012950https://repository.hanyang.ac.kr/handle/20.500.11754/108979
ISSN
0921-5093
DOI
10.1016/j.msea.2006.06.139
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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