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http://dx.doi.org/10.3365/KJMM.2012.50.7.523

Synthesis and Characterization of Rutile TiO2 Powder by the Sulfuric Acid 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)
Kim, Won Yong (Gangwon Regional Division, Korea Institute of Industrial Technology)
Lim, Sung Hwan (Department of Advanced Materials Science and Engineering, Kangwon National University)
Publication Information
Korean Journal of Metals and Materials / v.50, no.7, 2012 , pp. 523-530 More about this Journal
Abstract
We investigated the experimental method that uses the homogeneous precipitation method to prepare mica flakes-coated rutile-type titania pearlescent pigment with urea as a precipitant. $TiO_2$ particles exhibit a high reflection of lights and optical properties with chemical stabilities, so they are appropriate for coating on luminescent pigments (mica). The coating principle of mi ca coated titania with various thicknesses was analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and tested by spectrophotometer. Mica with a particle size in the range of $40-60{\mu}m$ was suspended in water, and metal sulphates and urea were added to the mixture, which was heated to boiling. The change in pH was continuously followed. The metal oxide and crystal structure were affected by the conditions of $TiOSO_4$ concentration and reaction time with a sintering temperature the range of $800-1100^{\circ}C$.
Keywords
oxides; mica; transmission electron microscopy; chemical synthesis; precipitation;
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