Materials Reports  2021, Vol. 35 Issue (Z1): 112-115 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Effect of Recycle of Electrolyte on the Morphology of Anodized Ta2O5 Nanotubes |
| YANG Shuai1, LIU Shifeng1,2, ZHANG Jing1, LIU Yahui1, DENG Chao1,2, ZHU Jialin1
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1 College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
2 Electron Microscopy Center of Chongqing University, Chongqing 400044, China |
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Abstract The high purity tantalum sheets were successively put into a H2SO4/HF electrolyte with a volume ratio of 9∶1 for anodic oxidation to prepare Ta2O5 nanotubes. Scanning electron microscopy (SEM) was used to characterize the morphology of Ta2O5 nanotubes prepared on the 2nd, 10th, 25th, 35th and 50th sheets. The effect of electrolyte recycling on the morphology of anodized Ta2O5 nanotubes and its regularity were studied. The experimental results show that the top of Ta2O5 nanotubes changes from cluster to loose, the length of the nanotubes becomes longer, the diameter is stable and the gap among nanotubes increases gradually with the using of electrolyte, which are related to the concentration of F- and it's distribution uniformity in electrolyte.
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Published: 16 July 2021
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| Fund:Chongqing Basic Science and Frontier Technology Research Project (cstc2017jcyjAX0094), National Science and Technology Major Project (2011ZX02705). |
| About author:: Shuai Yang is a postgraduate at the College of Mate-rials Science and Engineering in Chongqing University.The research focuses on the preparation of high dielectric constant Ta2O5 ceramics by Spark Plasma Sintering (SPS).Shifeng Liu, a associate professor and Ph. D. supervisor at the College of Materials Science and Engineering in Chongqing University, has published more than 50 journal papers. His team's research interests are microstructure and texture optimization of sputtering targets for integrated circuit manufacturing, deformation me-chanism and texture research of hexagonal structure metals and alloys, advanced material preparation and processing technology. He is responsible for the completion of a number of scientific research projects, including National Science and Technology Major Project, National Natural Science Foundation of China Youth Fund Project and so on. |
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