Influence of High-Temperature Water Vapor on Titanium Film Surface |
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Authors: | Wei Feng author-information" >,Qingyuan Wang,Qingquan Kong,Xiaodong Zhu,Jiejie Wu,Chenghua Sun |
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Affiliation: | 1.Advanced Research Institute,Chengdu University,Chengdu,People’s Republic of China;2.College of Architecture and Environment,Sichuan University,Chengdu,People’s Republic of China;3.School of Chemistry,Monash University,Clayton,Australia |
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Abstract: | This paper describes and analyzes the appearance, phase, and photocurrent of titanium film surfaces after exposure to water vapor at 100–1000 °C. The experimental results show that water vapor at higher than 300 °C can cause measurable oxidation of the titanium surface, and the oxidation product is changed into rutile from anatase in a gradual phase transformation with temperature. In the reaction, the product produced at 500–900 °C is a mixed phase of rutile and anatase. The titanium film surface appearance can change regularly with temperature, and an acicular rutile oxidation product can be produced on the surface at 800 °C. The photocurrent density on titanium surface increases with reaction temperature, and comes to a maximum value at 800 °C. However, with further increase in reaction temperature, the density decreases. |
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