A. Kobayashi, W. Jiang, Osaka University, Joining and Welding Research Institute (JWRI), Osaka, Japan
Anatase phase Titanium dioxide has a photo-catalytic performance for environmental protection. In this study, titanium dioxide/hydroxyapatite photo-catalytic coatings were deposited by atmospheric plasma spraying using powders with nano-sized grains. The injecting position of powder was varied in order to prepare porous structure coatings with high photo-catalytic activity. The phase compositions and microstructures of the coatings were characterized using X-ray diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM). The results showed that the porous structure coatings with relatively high anatase content could be obtained by controlling the injecting position of the powder. The bimodal microstructure of the coatings was also controllable.
Summary: Anatase phase Titanium dioxide has a photo-catalytic performance for environmental protection. In this study, titanium dioxide/hydroxyapatite photo-catalytic coatings were deposited by atmospheric plasma spraying using powders with nano-sized grains. The injecting position of powder was varied in order to prepare porous structure coatings with high photo-catalytic activity. The phase compositions and microstructures of the coatings were characterized using X-ray diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM). The results showed that the porous structure coatings with relatively high anatase content could be obtained by controlling the injecting position of the powder. The bimodal microstructure of the coatings was also controllable
