Proceedings of the Materials Research Society of Korea Conference (한국재료학회:학술대회논문집)
- 2009.11a
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- Pages.11.1-11.1
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- 2009
Eutectic structure evolution of Al2O3-ZrO2-Y2O3 system for apotential hybrid solar cell application
- Han, Young-Hwan (National Core Research Center for Hybrid Materials Solution, Pusan National University) ;
-
Yun, Jon-Do
(Department of Nano Science and Engineering, Kyungnam University)
;
- Harada, Yohei (Graduate School of Engineering, Chiba University) ;
- Jeong, Young-Keun (National Core Research Center for Hybrid Materials Solution, Pusan National University) ;
- Makino, Taro (Graduate School of Engineering, Chiba University) ;
-
Kim, Kwang-Ho
(National Core Research Center for Hybrid Materials Solution, Pusan National University)
;
- Kwon, Se-Hun (National Core Research Center for Hybrid Materials Solution, Pusan National University) ;
- Kim, Young-Moon (National Core Research Center for Hybrid Materials Solution, Pusan National University) ;
- Kakegawa, Kazuyuki (Graduate School of Engineering, Chiba University)
- Published : 2009.11.05
Abstract
Ternary Al2O3.ZrO2.Y2O3 samples with a eutecticcomposition were prepared by slow cooling. The microstructural evolution wasobserved with X-ray diffraction (XRD), scanning electron microscopy (SEM). TheSEM observation of the ternary samples agreed with the XRD with a completion ofcrystallisation by slow cooling. The target materials commonly have 'cantaloupe skin' microstructures as shown inthe previous studies by Han et al. The nanocomposite may have experienceddifferent cooling rates with two different microstructures, near the surfacehaving experienced optimal conditions for the eutectic reaction during theircooling and thus formed the eutectic microstructure, near the centre havingexperienced a slower cooling rate. The crystallised eutectic ternary Al2O3.ZrO2.Y2O3 system had three different phaseswith a 3Y2O3. 5Al2O3 (yttrium.aluminiumgarnet phase), an alumina phase formed by the eutectic reaction, and a solidsolution of ZrO2 and Y2O3.