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http://dx.doi.org/10.3365/KJMM.2011.49.5.367

Synthesis and Characterization of Anatase TiO2 Powder using a Homogeneous Precipitation Method  

Choi, Soon Ok (Department of Advanced Materials Science and Engineering, Kangwon National University)
Cho, Jee Hee (Department of Advanced Materials Science and Engineering, Kangwon National University)
Lim, Sung Hwan (Department of Advanced Materials Science and Engineering, Kangwon National University)
Chung, Eun Young (Materials Technology & Analysis Team, Research & Development Division, Hyundai Motor Co. & Kia Motors Corp)
Publication Information
Korean Journal of Metals and Materials / v.49, no.5, 2011 , pp. 367-373 More about this Journal
Abstract
This paper studies the experimental method that uses the homogeneous precipitation method to prepare mica flakes coated with anatase-type titania pearlescent pigment with urea as precipitant. The optimum technology parameters, the chemical composition, the microstructure, and the color property of resulting pigments are discussed. The coating principle of mica coated titania with various coating thickness is analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy(TEM) and tested by spectrophotometer analysis. The colored nanocrystalline pigments with different morphology and coating thickness 45-170 nm were prepared by homogeneous precipitation treatment of $TiOSO_4$(titanum oxysulfate) aqueous solutions. Characterizations on the pigments show that the pearlescent effects of the pigments depend mainly on mica size, thickness of the metal oxide deposit, its chemical composition, and crystal structure.
Keywords
titania; mica; pigments; optical property; transmission electron microscopy;
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