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Ti2PbC was synthesized for the first time by pressureless reaction synthesis using Ti/Pb/TiC as starting materials at a heating rate of 2 ℃/min and holding at 1370 ℃ for 2 h in a tube furnace protected by Ar atmosphere. The effects of starting powders, heating rates, and holding temperatures on the formation of Ti2PbC were investigated. It was found that elementary mixture of Ti/Pb/C or higher heating rates fail to form Ti2PbC. The decreased lattice parameters in the synthesized Ti2PbC indicated the existence of Pb vacancies in the compound. A reaction mechanism was proposed to explain the formation of Ti2PbC.


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Synthesis and formation mechanism of titanium lead carbide

Show Author's information C. LINGaW. B. TIANa( )P. ZHANGaW. ZHENGaY. M. ZHANGbZ. M. 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

Ti2PbC was synthesized for the first time by pressureless reaction synthesis using Ti/Pb/TiC as starting materials at a heating rate of 2 ℃/min and holding at 1370 ℃ for 2 h in a tube furnace protected by Ar atmosphere. The effects of starting powders, heating rates, and holding temperatures on the formation of Ti2PbC were investigated. It was found that elementary mixture of Ti/Pb/C or higher heating rates fail to form Ti2PbC. The decreased lattice parameters in the synthesized Ti2PbC indicated the existence of Pb vacancies in the compound. A reaction mechanism was proposed to explain the formation of Ti2PbC.

Keywords:

Ti2PbC, MAX phase, differential scanning calorimetry (DSC), thermal stability
Received: 08 December 2017 Revised: 14 March 2018 Accepted: 16 March 2018 Published: 17 April 2018 Issue date: June 2018
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Publication history
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Publication history

Received: 08 December 2017
Revised: 14 March 2018
Accepted: 16 March 2018
Published: 17 April 2018
Issue date: June 2018

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© The author(s) 2018

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