Study on preparation of high-quality ultrafine TiB<sub>2</sub> powder by short process melting method

Li Wenjing; Li Defu; Xin Yanan; Tang Min

doi:10.7513/j.issn.1004-7638.2022.05.003

Volume 43 Issue 5

Nov. 2022

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Li Wenjing, Li Defu, Xin Yanan, Tang Min. Study on preparation of high-quality ultrafine TiB2 powder by short process melting method[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 23-29. doi: 10.7513/j.issn.1004-7638.2022.05.003

Citation:

Li Wenjing, Li Defu, Xin Yanan, Tang Min. Study on preparation of high-quality ultrafine TiB₂ powder by short process melting method[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 23-29. doi: 10.7513/j.issn.1004-7638.2022.05.003

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Study on preparation of high-quality ultrafine TiB₂ powder by short process melting method

doi: 10.7513/j.issn.1004-7638.2022.05.003

Li Wenjing^{1, 2
,
,},
Li Defu^{1, 2},
Xin Yanan^{1, 2},
Tang Min^{1, 2}

1.
Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China
2.
Chengdu Advanced Metal Materials Industry Technology Research Institute Co., Ltd., Chengdu 610300, Sichuan, China

Received Date: 2022-06-30
Available Online: 2022-11-01
Publish Date: 2022-11-01

Abstract

Abstract

Based on research background and market competitive advantage of the enterprise production, a method of preparing high-quality ultrafine TiB₂ powder with short process by melting method was proposed in this paper. This method is high yield, short production cycle and no environmental pollution, by which advanced ultrafine TiB₂ powder with certain industrial extensibility was prepared using cheap titanium source, boron(B) source and nonhazardous reducing agent with short process and low cost. The effects of the selection of titanium and B sources, the proportion of molten salt, the synthesis temperature of high-quality powder, Ti/B molar ratio and holding time on the synthesis of TiB₂ powder were studied. The phase composition and microstructure of the powder were characterized by XRD and SEM. The results show that when the molar ratio of NaCl/KCl mixed salt is 1∶1 and the molar ratio of TiO₂/B is 3∶10, TiB₂ begins to form when the reactant is kept at 700 ℃ for 2 h. With the increase of temperature, the purity of the target product in the product gradually improves. The pure target product can be obtained only when the holding temperature reaches 950 ℃ without other by-products. The morphology of powder is cubic, sharp edges and corners. The particle size is about 150 nm. If the holding time is changed, the pure target product can be obtained at 900 ℃ with 5 h of holding time.
- superfine TiB₂ powder,
- melting method,
- TiO₂,
- boron powder

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References(15)

References

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