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Journal of Advanced Ceramics 2019, 8(3): 367-376 https://doi.org/10.1007/s40145-019-0318-4
Research Article | Open Access | Issue | Published: 03 August 2019

Slip casting and pressureless sintering of Ti3AlC2

Show Author's Information Yimin GONGa,  Wubian TIANa( ),  Peigen ZHANGa,  Jian CHENa,  Yamei ZHANGb,  Zhengming SUNa( )
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
Keywords:
slip casting, pressureless sintering (PLS), properties, Ti3AlC2
Cite this article:
GONG Y, TIAN W, ZHANG P, et al. Slip casting and pressureless sintering of Ti3AlC2. Journal of Advanced Ceramics, 2019, 8(3): 367-376. https://doi.org/10.1007/s40145-019-0318-4
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Abstract Full text About this article

Slip casting and subsequent pressureless sintering (PLS) allow the preparation of complex-shaped and large-sized Ti3AlC2 components for many potential applications. The behaviors of the suspensions, green compacts, and sintered samples of Ti3AlC2 were studied in this paper. The optimized condition of 1 wt% of arabic gum as dispersant at pH = 10 results in a Ti3AlC2 suspension for slip casting Ti3AlC2 green compacts without macro defects or cracks. The sintering temperature and Al4C3 embedding powder are found to dominate the properties of the sintered Ti3AlC2 samples. The Ti3AlC2 sample sintered at 1450 ℃ for 1.5 h with Al4C3 embedding powder reaches the best properties, namely 95.3% relative density, hardness of 4.18 GPa, thermal conductivity of 29.11 W·m-1·K-1, and electrical resistivity of 0.39 μΩ·m. The findings in this work may pave the way for the application of MAX phases with large size and complex shape.


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Slip casting and pressureless sintering of Ti3AlC2

Show Author's information Yimin GONGa, Wubian TIANa( ), Peigen ZHANGa, Jian CHENa, Yamei ZHANGb, Zhengming SUNa( )
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China

Abstract

Slip casting and subsequent pressureless sintering (PLS) allow the preparation of complex-shaped and large-sized Ti3AlC2 components for many potential applications. The behaviors of the suspensions, green compacts, and sintered samples of Ti3AlC2 were studied in this paper. The optimized condition of 1 wt% of arabic gum as dispersant at pH = 10 results in a Ti3AlC2 suspension for slip casting Ti3AlC2 green compacts without macro defects or cracks. The sintering temperature and Al4C3 embedding powder are found to dominate the properties of the sintered Ti3AlC2 samples. The Ti3AlC2 sample sintered at 1450 ℃ for 1.5 h with Al4C3 embedding powder reaches the best properties, namely 95.3% relative density, hardness of 4.18 GPa, thermal conductivity of 29.11 W·m-1·K-1, and electrical resistivity of 0.39 μΩ·m. The findings in this work may pave the way for the application of MAX phases with large size and complex shape.

Keywords: slip casting, pressureless sintering (PLS), properties, Ti3AlC2

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Publication history

Received: 02 November 2018
Revised: 15 January 2019
Accepted: 24 January 2019
Published: 03 August 2019
Issue date: September 2019

Copyright

© The author(s) 2019

Acknowledgements

This research was financially supported by National Natural Science Foundation of China (51731004, 51671054, 51501038), Natural Science Foundation of Jiangsu Province (BK20181285), and "the Fundamental Research Funds for the Central Universities" in China (2242018K40108, 2242018K40109).

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