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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.