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http://dx.doi.org/10.3740/MRSK.2002.12.10.809

Characterization of Thermal Spray Coating Layers of Nano Crystalline TiO2 for Photocatalyst  

Lee, Soo W. (Division of Matreials and Chemical Engineering, Sun Moon University)
Kim, Hak-Soo (Division of Matreials and Chemical Engineering, Sun Moon University)
Zeng, Yi (Division of Matreials and Chemical Engineering, Sun Moon University)
Hockey, Bernad (Ceramics Division, National institute of Standards and Technology)
Publication Information
Korean Journal of Materials Research / v.12, no.10, 2002 , pp. 809-813 More about this Journal
Abstract
Commercial nano crystalline $TiO_2$ powders were used to characterize photocatalyst, using thermal spray coating technique. The microstructure of coating layers were examined by SEM, FE-SEM and TEM. Also the cross sectional areas of TiO$_2$ coating layers were observed by SEM. The phases were analyzed by X-ray diffraction methed. Surface roughness and hardness were measured. It was found that phase transformation from anatase to rutile occurred, and the melted splats are all rutile, and unmeted nano particles were anatase. These unmelted anatase phase may enhance te play a role of photocatalyst.
Keywords
$TiO_2$; nano powder; thermal spray; anatase; rutile; phase transformation;
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