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J. Korean Ceram. Soc. > Volume 49(5); 2012 > Article
Journal of the Korean Ceramic Society 2012;49(5): 469.
doi: https://doi.org/10.4191/kcers.2012.49.5.469
XRD와 XAS에 의한 TiO2 분말의 상분율 결정
나사균, 이연승1
한밭대학교 재료공학과
1한밭대학교 정보통신공학전공
Estimation of Phase Ratio for TiO2 Powders by XRD and XAS
Sa-Kyun Rha, Youn Seoung Lee1
Department of Materials Science and Engineering, Hanbat National University
1Department of Information Communication Engineering, Hanbat National University
ABSTRACT
The crystallinity and phase ratio of anatase to rutile in $TiO_2$ were estimated by x-ray diffraction (XRD) and x-ray absorption spectroscopy (XAS). Traditionally, the structural characterization of $TiO_2$ powders has been carried out by XRD techniques, which are comparatively easy in use and analysis. However, materials with amorphous phase, nano-sized or nano-structured crystallinities cannot be fully characterized by XRD because XRD analysis has a limit for abnormal contributions of the nano-crystal such as the surface contribution. From the comparison with the experimental and calculated Ti K-edge XAS spectra, we found the possibility of efficient estimation in the crystalinites and the phase ratio of anatase to rutile for nano-sized $TiO_2$ mixture.
Key words: $TiO_2$, Anatase, Rutile, Phase ratio, XRD, XAS
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