Synthesis of TiB2 Powders with Hexagonal Morphology by Sol-Gel and Carbothermal Reduction Method

被引：0
|
作者：
Zhang Y. [1 ,2 ]
Wang J. [1 ]
机构：
[1] Department of Applied Chemistry, Yuncheng University, Yuncheng
[2] Department of Pharmacy, Changzhi Medical College, Changzhi
来源：
Xiyou Jinshu/Chinese Journal of Rare Metals | 2020年 / 44卷 / 04期
关键词：
Carbothermal reduction; Hexagonal morphology; Raman; Sol-gel; TiB[!sub]2[!/sub;
D O I：
10.13373/j.cnki.cjrm.XY18110029
中图分类号：
学科分类号：
摘要：
TiB2 powder was successfully synthesized by carbothermal reduction of Ti-B-C precursor in argon at 1450℃ for 2 h. And the Ti-B-C precursor was formed by sol-gel method using titanium butyrate (Ti(OC4H9)4), sucrose (C12H22O12), boric acid (H3BO3), and acetyl acetone(acac) as Ti, C, and B sources. Here, acac was used as chemical modifier to control Ti(OC4H9)4 hydrolysis to obtain stable sol. Furthermore, thermogravimetric-differential scanning calorimetry (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectrometer (FTIR), Raman, scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS) were employed to analyze and characterize the precursor and TiB2 powder. In the FTIR spectrum, the peak centered at 1446 cm-1 was ascribed to Ti-B-C bonds for TiB2 precursor; in the Raman spectra, the peaks centered at 263, 410, and 598 cm-1 were ascribed to Ti-B bond for TiB2 powder. In addition, the SEM image showed that the TiB2 powder had a hexagonal shape and the particlesize was about 2 μm. And the EDS indicated that the particles contained elements of Ti and B according to dot and line scan. © Editorial Office of Chinese Journal of Rare Metals. All right reserved.
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页码：433 / 439
页数：6
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