Tailoring of functionally graded zirconia–mullite/alumina ceramics
A new tailored zirconia–mullite/(0–100vol%) alumina as functionally graded ceramics (FGCs) was designed and synthesized by reaction sintering of zircon and alumina. Zircon and alumina powder mixtures were mixed, stacked, compacted in a cylindrical die and sintered. The sintered samples made of 11 la...
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| Veröffentlicht in: | Journal of the European Ceramic Society 2012-07, Vol.32 (8), p.1561-1573 |
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| container_title | Journal of the European Ceramic Society |
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| creator | Ewais, Emad M.M. Besisa, Dina Hussien Amin Zaki, Zaki Ismail Kandil, Abd El Hakim Taha |
| description | A new tailored zirconia–mullite/(0–100vol%) alumina as functionally graded ceramics (FGCs) was designed and synthesized by reaction sintering of zircon and alumina. Zircon and alumina powder mixtures were mixed, stacked, compacted in a cylindrical die and sintered. The sintered samples made of 11 layers and varied gradually in composition by 10vol% from one layer to the other layer (i.e. from zirconia–mullite layer to alumina layer) resulted in continuous functionally graded ceramics without sharp interfaces. Phase composition and densification behaviors of the samples were investigated. Microstructure, mechanical and thermal properties of FGC and its non-layered composites were studied. Results showed that the tailored FGZM/A gave continuous homogenous structure with highly improved physical, mechanical and thermal properties. The different properties of tailored FGZM/A recorded average values or rather better of its non-layered composites which gave a new way for material design. |
| doi_str_mv | 10.1016/j.jeurceramsoc.2012.01.016 |
| format | Article |
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Zircon and alumina powder mixtures were mixed, stacked, compacted in a cylindrical die and sintered. The sintered samples made of 11 layers and varied gradually in composition by 10vol% from one layer to the other layer (i.e. from zirconia–mullite layer to alumina layer) resulted in continuous functionally graded ceramics without sharp interfaces. Phase composition and densification behaviors of the samples were investigated. Microstructure, mechanical and thermal properties of FGC and its non-layered composites were studied. Results showed that the tailored FGZM/A gave continuous homogenous structure with highly improved physical, mechanical and thermal properties. 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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Aluminum oxide Ceramics Densification FGZM/A Functionally gradient materials Mechanical properties Microstructure Sintering Thermal properties Zircon |
| title | Tailoring of functionally graded zirconia–mullite/alumina ceramics |
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