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<p>In this study, silver-coated graphene-reinforced Ti–13Nb–13Zr composites (Ag@GNSs/TC26) were fabricated using selective laser melting (SLM) technology. Their friction and corrosion behaviors were systematically investigated, and the mechanisms underlying their wear and corrosion resistance were discussed, providing valuable insights into the fabrication of metal-modified graphene-reinforced titanium composites. The results indicate that the Ag@GNSs/TC26 composite was fabricated using process parameters of 325 W laser power, 1000&#xa0;mm/s scanning speed, 30&#xa0;μm layer thickness, and 130&#xa0;μm scan spacing. The formation of TiC and Ti<sub>3</sub>Ag during the manufacturing process contributes to the enhancing hardness and wear resistance of the composites. The hardness of the composite increased by 11.72%, while the wear volume and wear rate decreased by 27.27% and 29.09%, respectively. Furthermore, the self-lubricating properties of graphene nanosheets (GNSs) contributed 40.65% to the enhancing wear resistance of the composites. In NaCl solution, the Ag@GNSs/TC26 composite exhibited superior corrosion resistance, with a 47.12% reduction in corrosion current. Due to its excellent wear resistance and corrosion resistance, the Ag@GNSs/TC26 composite provides a safer and more durable solution for high-reliability load-bearing bioimplants and complex engineering components. Furthermore, the use of silver-coated graphene enables the uniform dispersion of the reinforcing phase while regulating the formation of in-situ phases (TiC, Ti<sub>3</sub>Ag), thereby overcoming the bottlenecks associated with traditional graphene agglomeration and uncontrolled interfacial reactions.</p>

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Surface properties of Ag@GNSs reinforced TC26 titanium composite manufactured by selective laser melting

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • Wei Liu,
  • Qiusheng Xie,
  • Ruifeng Zhao,
  • Qian Gao,
  • Pengcheng Huo

摘要

In this study, silver-coated graphene-reinforced Ti–13Nb–13Zr composites (Ag@GNSs/TC26) were fabricated using selective laser melting (SLM) technology. Their friction and corrosion behaviors were systematically investigated, and the mechanisms underlying their wear and corrosion resistance were discussed, providing valuable insights into the fabrication of metal-modified graphene-reinforced titanium composites. The results indicate that the Ag@GNSs/TC26 composite was fabricated using process parameters of 325 W laser power, 1000 mm/s scanning speed, 30 μm layer thickness, and 130 μm scan spacing. The formation of TiC and Ti3Ag during the manufacturing process contributes to the enhancing hardness and wear resistance of the composites. The hardness of the composite increased by 11.72%, while the wear volume and wear rate decreased by 27.27% and 29.09%, respectively. Furthermore, the self-lubricating properties of graphene nanosheets (GNSs) contributed 40.65% to the enhancing wear resistance of the composites. In NaCl solution, the Ag@GNSs/TC26 composite exhibited superior corrosion resistance, with a 47.12% reduction in corrosion current. Due to its excellent wear resistance and corrosion resistance, the Ag@GNSs/TC26 composite provides a safer and more durable solution for high-reliability load-bearing bioimplants and complex engineering components. Furthermore, the use of silver-coated graphene enables the uniform dispersion of the reinforcing phase while regulating the formation of in-situ phases (TiC, Ti3Ag), thereby overcoming the bottlenecks associated with traditional graphene agglomeration and uncontrolled interfacial reactions.