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- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제20권 제1호
- 발행연도
- 2019.1
- 수록면
- 8 - 17 (10page)
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Rare-earth zirconate (Re2Zr2O7, Re = La, Gd, Nd, Y) ceramic materials was synthesized by solid-state reaction methodthrough high-energy ball-milling process (HEBM) and subsequently followed by two different calcination techniques. Theimpacts of the two different calcination techniques on the phase structure, morphology, powder flowability (i.e. particle sizeand distribution, specific surface area, pore size and pore volume) were studied. The effectiveness of the calcination techniquesof the resulting Re2Zr2O7 powders were investigated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy(FTIR), and Scanning electron microscopy (SEM) techniques. The outcomes demonstrated that both calcination techniquescould produce Re2Zr2O7 powders with an excellent pyrochlore structure. The calcination temperature was reduced by theMicrowave Calcination (MWC) technique when compared with the Conventional Calcination (CVC) technique. The rareearthzirconate powders exhibited different particle size distribution. The resulting particle median diameter was about 2.5-45 μm for CVC and 1.36-2.27 μm for MWC. The powder flowability of Re2Zr2O7 powders was strongly dependent on theparticle size and distribution. Thus MWC technique for the preparation of Re2Zr2O7 powders is the best choice of powderprocessing to achieve desired properties.
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