Preparations of TiO2 nanocrystal coating layers with various morphologies on Mullite fibers for infrared opacifier application |
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| Authors: | Jingxia YangYuewei Zhang Zhanglian Hong Ronghua MaDi Zhang Xiaoting WangChencheng Sun Zijun Hu |
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| Affiliation: | a State Key Laboratory of Silicon Materials and Department of Materials Science & Engineering, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, PR Chinab Science and Technology on Advanced Functional Composite Laboratory, Aerospace Research Institute of Materials & Processing Technology, No.1 Nandahongmen Road, Beijing 100076, PR China |
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| Abstract: | TiO2 nanorods coatings (TONC) were prepared on the surface of Mullite fibers by seed-hydrothermal method, which were designed as infrared opacifier. The influences of different tetrabutyl-titanate amount on the TONC morphologies, crystalline and optical properties were investigated. Effective specific extinction (e*) was used to characterize their masking ability. The TONC morphologies could be adjusted from nanoparticles to nanorods, which had direct influence on their optical properties. In the 3 μm-6 μm range of infrared light, e* of TONC could be improved up to 2-4 folds compared with that of Mullite fibers. Present study indicated TONC is a promising infrared opacifier. |
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| Keywords: | TiO2 nanorods Mullite fiber Coating layer Morphology Infrared opacifier Effective specific extinction Two-step process |
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