Synthesis of spherical (30nm) and rod-like (200nm) zirconia co-reinforced mullite nanocomposites

Synthesis of spherical (30nm) and rod-like (200nm) zirconia co-reinforced mullite nanocomposites

The objective of this research is to study microstructure and phase evolution of zirconia–mullite (ZM) nanocomposites which were synthesized by the direct transformation from amorphous precursor monoliths. The monolithic precursors were heat treated at 950–1250°C to obtain ZM composites. Scanning el...

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Veröffentlicht in:Ceramics international 2013-05, Vol.39 (4), p.4163-4170
Hauptverfasser: Zhong, Jie, Zhao, Juan, Liang, Shuquan, Tan, Xiaoping, Zhou, Manyuan, Zhang, Guowei
Format: Artikel
Sprache:eng
Schlagworte:
B. Nanocomposites
C. Mechanical properties
D. Mullite
D. Zirconia
Grains
Microstructure
Mullite
Nanocomposites
Nanomaterials
Nanostructure
Precursor transformation
Precursors
Zirconium dioxide
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Beschreibung
Zusammenfassung:The objective of this research is to study microstructure and phase evolution of zirconia–mullite (ZM) nanocomposites which were synthesized by the direct transformation from amorphous precursor monoliths. The monolithic precursors were heat treated at 950–1250°C to obtain ZM composites. Scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), transmission electron microscopy (TEM) and high resolution TEM (HRTEM) were employed to investigate the microstructure of the composites. A unique nano- and submicron-zirconia co-reinforced mullite composite microstructure was obtained after a controlled crystallization. The nano tetragonal zirconia (t-ZrO2) grains (
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2012.10.272