Study on preparation of Ti<sub>3</sub>AlC<sub>2 </sub>powder using sponge titanium as raw material

Pu Xin; Zhu Xuejun; Deng Jun; Zhang Yi; Yang Tao; Wang Jun

doi:10.7513/j.issn.1004-7638.2023.02.004

Volume 44 Issue 2

Apr. 2023

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Pu Xin, Zhu Xuejun, Deng Jun, Zhang Yi, Yang Tao, Wang Jun. Study on preparation of Ti3AlC2 powder using sponge titanium as raw material[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 28-33. doi: 10.7513/j.issn.1004-7638.2023.02.004

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Pu Xin, Zhu Xuejun, Deng Jun, Zhang Yi, Yang Tao, Wang Jun. Study on preparation of Ti₃AlC₂powder using sponge titanium as raw material[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 28-33. doi: 10.7513/j.issn.1004-7638.2023.02.004

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Study on preparation of Ti₃AlC₂powder using sponge titanium as raw material

doi: 10.7513/j.issn.1004-7638.2023.02.004

School of Biological and Chemical Engineering, Panzhihua University, Panzhihua 617000, Sichuan, China

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Received Date: 2022-06-26
Publish Date: 2023-04-30

Abstract

Abstract

Ti₃AlC₂ powder was synthesized by the pressureless sintering method with a mixture of the low-value titanium sponge, aluminum and carbon at a mixing ratio of 3∶1.2∶1.8. The sintered products at the holding temperature of 1000 ℃ and 1100 ℃ and the influence of different holding times on the experimental results were discussed. At the same time, the molten salt method was used to explore the influence of doping of NaCl or KCl on the purity of Ti₃AlC₂ prepared by pressureless sintering method. The experimental results show that the products sintered under the condition with argon gas protection show the best purity at 1100 ℃. In the molten salt process, the products sintered under the condition with salt doped still have the best purity at 1100 ℃, and the purity of the products doped with "NaCl" is higher than that of "KCl". Meanwhile, insufficient holding time would lead to excessive impurities of Ti₂AlC phase and TiC phase, while too long holding time would also lead to product decomposition. The final experiment determined that the purity of the product with sponge titanium: aluminum∶carbon∶salt in the molar ratio of 3∶1.2∶1.8∶2.5 was the highest when it was heated to 1100 ℃ and kept for 0.5 h in a tubular furnace with argon protection, which could reaching 90%.
- Ti₃AlC₂ powder,
- sponge titanium,
- pressureless sintering,
- molten salt method,
- purity

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References(21)

References

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