期刊
JOURNAL OF THERMAL SPRAY TECHNOLOGY
卷 24, 期 6, 页码 915-924出版社
SPRINGER
DOI: 10.1007/s11666-015-0251-1
关键词
plasma spray; solution; suspension; titanium dioxide
资金
- National Natural Science Foundation of China [50901071]
- Innovation Fund Project of the Chinese Academy of Sciences [CXJJ-09-M56]
Titanium dioxide coatings were prepared from titanium isopropoxide solution containing nano TiO2 particles by use of a plasma-spray process. The effects of stand-off distance on coating composition and microstructure were investigated and compared with those for pure solution precursor and a water-based suspension of TiO2. The results showed that the anatase content of the coating increased with increasing stand-off distance and the rate of deposition decreased with increasing spray distance. Anatase nanoparticles in solution were incorporated into the coatings without phase transformation whereas most of the TiO2 in the precursor solution was transformed into rutile. The microstructure of preserved anatase particles bound by rutile improved the efficiency of deposition of the coating. The amount of anatase phase can be adjusted by variation of the ratio of solution to added anatase TiO2 nanoparticles.
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