| 液料等离子热喷法制备Fe3+/TiO2纳米粉末 |
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| 引用本文： | 徐大鹏,雷阿利,冯拉俊,杨士川. 液料等离子热喷法制备Fe3+/TiO2纳米粉末[J]. 焊接学报, 2008, 29(8): 49-52 |
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| 作者姓名： | 徐大鹏 雷阿利 冯拉俊 杨士川 |
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| 作者单位： | 西安理工大学材料科学与工程学院,西安,710048 |
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| 摘 要： | 通过对液料等离子热喷前驱物添加掺杂成分实现了液料等离子热喷TiO2纳米粉末的掺杂改性,并利用TEM,XRD及XPS对其进行表征.结果表明,采用液料等离子热喷法可以制备Fe3 掺杂TiO2纳米粉末,所制备粉末形貌基本呈球形或近球形,粒径分布为10～35 nm,掺杂量小于2.0%时粉末为锐钛矿及金红石相混晶,Fd3 掺杂促进锐钛矿向金红石相的转变,掺杂量为10.0%时析出了Fe2Ti3O9相.Fe3 掺杂不会引起TiO2粒径的大范围波动.粉末中含有O,Ti,Fe和C等元素,Fe元素在TiO2中仍为 3价.
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| 关 键 词： | Fe3 掺杂 纳米粉末 液料等离子喷涂 |
| 收稿时间： | 2007-09-27 |
Preparation of Fe3+/TiO2 nanopowders by plasma spraying with liquid feedstock |
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| XU Dapeng,LEI Ali,FENG Lajun and YANG Shichuan. Preparation of Fe3+/TiO2 nanopowders by plasma spraying with liquid feedstock[J]. Transactions of The China Welding Institution, 2008, 29(8): 49-52 |
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| Authors: | XU Dapeng LEI Ali FENG Lajun YANG Shichuan |
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| Affiliation: | School of Material Science and Engineering, Xi''an University of Technology, Xi''an, 710048, China,School of Material Science and Engineering, Xi''an University of Technology, Xi''an, 710048, China,School of Material Science and Engineering, Xi''an University of Technology, Xi''an, 710048, China and School of Material Science and Engineering, Xi''an University of Technology, Xi''an, 710048, China |
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| Abstract: | TiO2 nanopowders were modified through adding dopant material into precursor of liquid plasma spray.The powders were characterized by transmission electron microscopy (TEM), Xray diffraction (XRD)and X-ray photoelectron spectroscopy (XPS). The results showed that iron-doped TiO2 nanopowders can be prepared by liquid plasma spray, the prepared powders is in the range of 10-35 nm with spherical shape or near spherical shape and the powders were composed of mixed crystal of anatase and rutile when iron content is less than 2.0%, Fe3+ accelerates the transition from rutile phase to anatase phase and Fe2Ti3O9 is precipitated when iron content is 10.0%.The iron doping can not cause long range waving of average crystallite size of powders.There are O, Ti, Fe and C elements in the prepared powders and the valency of Fe element is still +3. |
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| Keywords: | TiO2 |
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