Growth behavior of TiB2 hexagonal plates prepared via a molten-salt-mediated carbothermal reduction |
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| Authors: | Shaolei Song Tong Zhang Chen Xie Jianmin Zhou Rong Li Qiang Zhen |
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| Affiliation: | 1. Research Center of Nano Science and Technology, Shanghai University, Shanghai, China;2. School of Materials Science and Engineering, Shanghai University, Shanghai, China |
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| Abstract: | TiB2 powders were successfully synthesized by a molten-salt-mediated carbothermal reduction method. The products obtained at 1300°C for 2 hours were hexagonal plates with side length of 3-8 μm and thicknesses of 200-500 nm. The microstructural evolution with temperature confirmed that the growth of TiB2 hexagonal plates was a layer-by-layer growth controlled by a two-dimensional nucleation. No-uniform grains were observed attached on side and step edges of TiB2 plates, which became finer and disappeared during the growth. This indicated that layer growth and growth on the side of TiB2 plates followed the surface adsorption growth model. |
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| Keywords: | grain growth molten salt synthesis plate titanium diboride |
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