Synthesis and Formation Mechanism of Mn-Doped Zn₂SiO₄ Brown Pigment

Abstract:

A willemite brown inorganic pigment was synthesized by subsyituting MnO for ZnO. The composition of Mn_xZn_2-xSiO₄ (X=0.1, 0.3, 0.5, 0.7 and 0.9mole) was synthesized at 1200~1300°C by solid state method. The characteristics of synthesized pigment were analyzed by X-ray diffraction, FT-IR spectroscopy, Raman spectroscopy and SEM. The UV- vis spectroscopy and CIE L*a*b* measurement were employed to analyzed color. Willemite single crystal phase was synthesized with compositions of Mn_0.3Zn_1.5SiO₂ and Mn_0.5Zn_1.5 SiO₂ from 1300°C/3h. The synthesized pigment of Mn_0.5Zn_1.5 SiO₂ at 1300°C/3h was applicated to lime barium glaze and lime zinc glaze and the CIE L*a*b* values were 30.32, 7.17, 3.14 and 32.04, 8.18, 3.49, respectively.

• Periodical: Materials Science Forum (Volume 695)
• Pages: 295-298
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.695.295
• Online since: July 2011
• Authors: Dong Ha Hwang, Kyong Sop Han, Byung Ha Lee
• Keywords: Brown Pigment, Willemite, Zn₂SiO₄

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