Growth behavior of TiB2 hexagonal plates prepared via a molten-salt-mediated carbothermal reduction
Growth behavior of TiB2 hexagonal plates prepared via a molten-salt-mediated carbothermal reduction
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通过熔盐介导的碳热还原制备 TiB2 六方板的生长行为
DOI：
10.1111/jace.16800
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发表时间：
2020
影响因子：
3.9
通讯作者：
Zhen Qiang
中科院分区：
文献类型：
--
作者：
Song Shaolei;Zhang Tong;Xie Chen;Zhou Jianmin;Li Rong;Zhen Qiang
采用熔盐碳热还原法成功合成了TiB 2粉体。在1300°C下2小时获得的产物是边长为3 - 8 μ π ι且厚度为200 - 500 nm的六边形板。显微组织随温度的变化证实了TiB 2六方片晶的生长是由二维形核控制的逐层生长。TiB 2板的侧边和台阶边观察到不均匀的晶粒附着，在生长过程中变得更细并消失。这表明TiB 2的层生长和侧边生长遵循表面吸附生长模型。
TiB2powders 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 TiB2hexagonal 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 TiB2plates, which became finer and disappeared during the growth. This indicated that layer growth and growth on the side of TiB2plates followed the surface adsorption growth model.