Functionally graded materials (FGMs) are innovative composite materials characterized by a gradual spatial change in composition, microstructure and related properties. This work was focused on glass-alumina functionally graded materials, produced via percolation of molten glass into a sintered polycrystalline alumina substrate and via plasma spraying. The glass composition, belonging to the CaO-ZrO2-SiO2 system, was purposely designed in order to minimize the difference between the coefficients of thermal expansion of the constituent phases, which may induce thermal residual stresses in service or during fabrication. The ingredient materials as well as the resultant FGMs were carefully characterized. In particular, a great attention was devoted to the microstructural investigation of the penetration profile. (c) 2006 Elsevier Ltd. All rights reserved.
Glass-ceramic Functionally Graded Materials produced with different methods / Cannillo, Valeria; Lusvarghi, Luca; Manfredini, Tiziano; Montorsi, Monia; Siligardi, Cristina; Sola, Antonella. - In: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY. - ISSN 0955-2219. - STAMPA. - 27:2-3(2007), pp. 1293-1298. [10.1016/j.jeurceramsoc.2006.05.033]
Glass-ceramic Functionally Graded Materials produced with different methods
CANNILLO, Valeria;LUSVARGHI, Luca;MANFREDINI, Tiziano;MONTORSI, Monia;SILIGARDI, Cristina;SOLA, Antonella
2007
Abstract
Functionally graded materials (FGMs) are innovative composite materials characterized by a gradual spatial change in composition, microstructure and related properties. This work was focused on glass-alumina functionally graded materials, produced via percolation of molten glass into a sintered polycrystalline alumina substrate and via plasma spraying. The glass composition, belonging to the CaO-ZrO2-SiO2 system, was purposely designed in order to minimize the difference between the coefficients of thermal expansion of the constituent phases, which may induce thermal residual stresses in service or during fabrication. The ingredient materials as well as the resultant FGMs were carefully characterized. In particular, a great attention was devoted to the microstructural investigation of the penetration profile. (c) 2006 Elsevier Ltd. All rights reserved.
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