<報文>ナノエリア解析システムによるメカノケミカル処理を施した廃蛍光材の構造評価

概要

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The dry mechanochemical treatment is known to enhance the regeneration of waste fluorescent materials. In this study, fine structures of the red fluorescence (Y_2O_3 : Eu^<3+> (YOX)), which was subjected to the mechanochemical treatment, were intensively studied by high-resolution electron microscopy, electron diffraction, and X-ray diffraction. Small particles with subnanometric size were produced by the dry mechanochemical treatment, and the specimen was found to partly transform from C-type Y_2O_3 (Cubic) to Btype Y_2O_3 (Monoclinic). Systematic observations of the yield of Y and Eu by leaching, the morphology, and the crystal structure indicate that appearance of the many fine particles may be essential to the considerable improvement of the yield by the mechanochemical treatment.Transmission electron microscopyElectron diffractionFine structureMechanochemistryRare earths
東北大学の論文
2002-03-01