Synthesis of Perovskite Brown Pigments

In Don Joo; Kyong Sop Han; Byung Ha Lee

doi:10.4028/www.scientific.net/MSF.695.303

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HomeMaterials Science ForumMaterials Science Forum Vol. 695Synthesis of Perovskite Brown Pigments

Synthesis of Perovskite Brown Pigments

Abstract:

This study aims to synthesize Cr doped Perovskite brown pigments. The pigment were synthesized by doping Cr₂O₃(0.01 ~ 0.05mole) for TiO₂(0.993 ~ 0.963 mole) at 1150 ~ 1350°C. The samples were characterized by X-ray diffraction (XRD), Raman Spectrometer, Scanning Electron Microscope(SEM) and the UV/Vis spectroscopy. The optimum composition was CaCr_0.03Ti_0.978O₃and heating condition was 1300°C for 3h of soaking time. The doped Cr ion for Perovskite was observed to be Cr(Ⅲ) and Cr(Ⅳ). The brown color was mixed with violet doped by Cr⁴⁺(³A₂ → ³T₂) and Blueish-Green doped by Cr³⁺(4A_2g → ⁴F_1g). The results of SEM analysis showed the Perovskite structure and the particle size was approximately 2µm. The color in Frit 6060 glaze adding 10wt% pigment was Redish Brown, and CIE Lab parameters were L^*= 41.53, a^*=13.27 and b^*=9.94 .

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Materials Science Forum (Volume 695)

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303-306

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https://doi.org/10.4028/www.scientific.net/MSF.695.303

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July 2011

Authors:

In Don Joo, Kyong Sop Han, Byung Ha Lee

Keywords:

Brown, Perovskite, Pigment, Synthesis

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