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Journal of Advanced Ceramics 2017, 6(2): 90-99 https://doi.org/10.1007/s40145-017-0221-9
Research Article | Open Access | Issue | Published: 06 May 2017

Fabrication, mechanical properties, and tribological behaviors of Ti2AlC and Ti2AlSn0.2C solid solutions

Show Author's Information Leping CAIa,  Zhenying HUANGa,b( ),  Wenqiang HUa,  Suming HAOa,  Hongxiang ZHAIa,  Yang ZHOUa
Centre of Materials Science and Engineering, School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing 100044, China
Key Laboratory of Vehicle Advanced Manufacturing, Measuring and Control Technology (Beijing Jiaotong University), Ministry of Education, China
Keywords:
microstructure, mechanical property, tribological behavior, Ti2AlC, Ti2AlSn0.2C
Cite this article:
CAI L, HUANG Z, HU W, et al. Fabrication, mechanical properties, and tribological behaviors of Ti2AlC and Ti2AlSn0.2C solid solutions. Journal of Advanced Ceramics, 2017, 6(2): 90-99. https://doi.org/10.1007/s40145-017-0221-9
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Abstract Full text About this article

Highly pure and dense Ti2AlC and Ti2AlSn0.2C bulks were prepared by hot pressing with molar ratios of 1:1.1:0.9 and 1:0.9:0.2:0.85, respectively, at 1450 ℃ for 30 min with 28 MPa in Ar atmosphere. The phase compositions were investigated by X-ray diffraction (XRD); the surface morphology and topography of the crystal grains were also analyzed by scanning electron microscopy (SEM). The flexural strengths of Ti2AlC and Ti2AlSn0.2C have been measured as 430 and 410 MPa, respectively. Both Vickers hardness decreased slowly as the load increased. The tribological behavior was investigated by dry sliding a low-carbon steel under normal load of 20-80 N and sliding speed of 10-30 m/s. Ti2AlC bulk has a friction coefficient of 0.3-0.45 and a wear rate of (1.64-2.97)×10-6 mm3/(N·m), while Ti2AlSn0.2C bulk has a friction coefficient of 0.25-0.35 and a wear rate of (2.5-4.31)×10-6 mm3/(N·m). The influences of Sn incorporation on the microstructure and properties of Ti2AlC have also been discussed.


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About this article

Fabrication, mechanical properties, and tribological behaviors of Ti2AlC and Ti2AlSn0.2C solid solutions

Show Author's information Leping CAIa, Zhenying HUANGa,b( ), Wenqiang HUa, Suming HAOa, Hongxiang ZHAIa, Yang ZHOUa
Centre of Materials Science and Engineering, School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing 100044, China
Key Laboratory of Vehicle Advanced Manufacturing, Measuring and Control Technology (Beijing Jiaotong University), Ministry of Education, China

Abstract

Highly pure and dense Ti2AlC and Ti2AlSn0.2C bulks were prepared by hot pressing with molar ratios of 1:1.1:0.9 and 1:0.9:0.2:0.85, respectively, at 1450 ℃ for 30 min with 28 MPa in Ar atmosphere. The phase compositions were investigated by X-ray diffraction (XRD); the surface morphology and topography of the crystal grains were also analyzed by scanning electron microscopy (SEM). The flexural strengths of Ti2AlC and Ti2AlSn0.2C have been measured as 430 and 410 MPa, respectively. Both Vickers hardness decreased slowly as the load increased. The tribological behavior was investigated by dry sliding a low-carbon steel under normal load of 20-80 N and sliding speed of 10-30 m/s. Ti2AlC bulk has a friction coefficient of 0.3-0.45 and a wear rate of (1.64-2.97)×10-6 mm3/(N·m), while Ti2AlSn0.2C bulk has a friction coefficient of 0.25-0.35 and a wear rate of (2.5-4.31)×10-6 mm3/(N·m). The influences of Sn incorporation on the microstructure and properties of Ti2AlC have also been discussed.

Keywords: microstructure, mechanical property, tribological behavior, Ti2AlC, Ti2AlSn0.2C

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Publication history
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Publication history

Received: 18 November 2016
Revised: 27 February 2017
Accepted: 08 March 2017
Published: 06 May 2017
Issue date: June 2017

Copyright

© The author(s) 2017

Acknowledgements

This work was supported by the Fundamental Research Funds for the Central Universities (Nos. 2016YJS122 and 2014JBZ015), the National Natural Science Foundation of China (NSFC, Nos. 51301013 and 51572017), and the Beijing Government Funds for the Constructive Project of Central Universities.

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