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<p>TiC/Ti<sub>2</sub>AlC core-shell structure reinforced Ti-based composite coating was prepared by laser cladding technology. The effect of Ti<sub>2</sub>AlC content on the microstructure and mechanical behavior of the coating was studied. The results showed that the reinforced phase was mainly TiC/Ti<sub>2</sub>AlC MAX phase core-shell structure at 20% Ti<sub>2</sub>AlC content. According to the synthesis mechanism, Ti<sub>2</sub>AlC nucleated on TiC through the diffusion of Al atoms to further generate the core-shell structure. The friction and wear test results showed that the wear resistance of the coating was significantly improved under the load distribution effect of the core-shell structure. The friction coefficient decreased to 0.342, and the wear rate reached 8.19×10<sup>−5</sup> mm<sup>3</sup>/(N·m), which was only 47.07% of TC4 substrate.</p>

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Microstructure evolution and tribological behavior of TiC/Ti2AlC core-shell particle-reinforced composite coatings

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • Si-yuan Liu,
  • Tai-qian Mo,
  • Bo Lin,
  • Xue-jian Wang,
  • Hua-qiang Xiao,
  • Kai Ma

摘要

TiC/Ti2AlC core-shell structure reinforced Ti-based composite coating was prepared by laser cladding technology. The effect of Ti2AlC content on the microstructure and mechanical behavior of the coating was studied. The results showed that the reinforced phase was mainly TiC/Ti2AlC MAX phase core-shell structure at 20% Ti2AlC content. According to the synthesis mechanism, Ti2AlC nucleated on TiC through the diffusion of Al atoms to further generate the core-shell structure. The friction and wear test results showed that the wear resistance of the coating was significantly improved under the load distribution effect of the core-shell structure. The friction coefficient decreased to 0.342, and the wear rate reached 8.19×10−5 mm3/(N·m), which was only 47.07% of TC4 substrate.