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http://dx.doi.org/10.4191/kcers.2012.49.5.469

Estimation of Phase Ratio for TiO2 Powders by XRD and XAS  

Rha, Sa-Kyun (Department of Materials Science and Engineering, Hanbat National University)
Lee, Youn Seoung (Department of Information Communication Engineering, Hanbat National University)
Publication Information
Journal of the Korean Ceramic Society / v.49, no.5, 2012 , pp. 469-474 More about this Journal
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.
Keywords
$TiO_2$; Anatase; Rutile; Phase ratio; XRD; XAS;
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