Citation: WANG Yong, YU Hai-Peng, HU Yong-Qi, ZHAO Rui-Hong, LI Fei-Long, ZHANG Wen-Jiao, ZHANG Zhao-Xiang. Influence of CuSO₄ Doping on the Oxidation Resistance of TiO₂-Coated Carbon Fibers[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(12): 2549-2554. doi: 10.3969/j.issn.1001-4861.2013.00.403 shu

Influence of CuSO₄ Doping on the Oxidation Resistance of TiO₂-Coated Carbon Fibers

1.
1 School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;

Received Date: 27 May 2013
Available Online: 31 July 2013
Fund Project: 河北省自然科学基金(B2013208155) (B2013208155)国家自然科学基金(No.60578041)资助项目。 (No.60578041)

Carbon fiber (CF) was coated with TiO₂ layer by sol-dipping method using CuSO₄ as dopant. The prepared samples were characterized by X-ray diffraction (XRD), scanning electronic microscopy (SEM) and transmission electron microscopy (TEM). The SEM/TEM results show that the prepared CuSO₄-TiO₂ layer is uniformly and compactly. The thickness of the coating layer is increased from 45 nm to 185 nm. XRD results show that prepared layer is composited by anatase TiO₂. The oxidation resistant properties of the carbon fibers were studied using isothermal oxidation experimental. Compared with TiO₂ coated carbon fiber, the complete decomposition temperature of the CuSO₄-TiO₂ coated carbon fiber is increased from 667 ℃ to 800 ℃. The oxidation activation energy of TiO₂ coating carbon fiber and CuSO₄-TiO₂ coating carbon fiber are 118.390 kJ· mol^-1, 152.562 kJ·mol^-1, respectively. The improvement of oxidation resistant of the CuSO₄-TiO₂ coated carbon fiber is attributed to the CuSO₄ liquid sinter effect on the TiO₂ layer.
- TiO₂;carbon fibers;oxidation resistance;liquid phase sintering
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沈阳化工大学材料科学与工程学院沈阳 110142

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通讯作者: 陈斌, bchen63@163.com

Influence of CuSO₄ Doping on the Oxidation Resistance of TiO₂-Coated Carbon Fibers