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<p>This study investigates the tribological performance of Carbon fibre-reinforced polycarbonate (PC) composites produced by the Fused Déposition Modeling (FDM) process and the influence of surface coating on this behaviour. The samples were tested under dry sliding conditions by the Pin-on-disc method. The samples were tested under different applied loadings, 15&#xa0;N, 20&#xa0;N and 25&#xa0;N and different speeds 200, 250 and 300 RPM. Test specimens consisted of 80% PC and 20% carbon fibre. The study was carried out on both coated and uncoated samples to evaluate their coefficient of friction (COF) and wear characteristics with time.Uncoated samples had higher, less stable COF values, and a more severe wear rate under increasing load and speed, indicating that the surface of those samples was degraded and more susceptible to frictional heat buildup and lesser durability. With the application of coating, the COF profiles have lower values and exhibit a more stable trend, while the wear rate is also reduced. Further, the wear rates are also considerably reduced with the use of coating at above 20&#xa0;N load. The coating obstructed molecules from adhering to the surface, thereby aiding in surface interaction, correcting slip heat and wear. The study confirms that the tribological behaviour of carbon fiber reinforced PC FDM-printed part can be improved with surface coating. Research cited in this article demonstrates that surface engineering can enhance additive manufacturing parameters to develop more durable, low-friction components for demanding mechanical applications.</p>

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Tribological performance of carbon fibre-reinforced polycarbonate composites fabricated via fused deposition modelling

  • 期刊论文

  • 发表日期：

    2026年8月5日

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  • Rachamalli Mahidhar,
  • Sravanthi K,
  • R. Pradeep,
  • T. Senthil Vadivel

摘要

This study investigates the tribological performance of Carbon fibre-reinforced polycarbonate (PC) composites produced by the Fused Déposition Modeling (FDM) process and the influence of surface coating on this behaviour. The samples were tested under dry sliding conditions by the Pin-on-disc method. The samples were tested under different applied loadings, 15 N, 20 N and 25 N and different speeds 200, 250 and 300 RPM. Test specimens consisted of 80% PC and 20% carbon fibre. The study was carried out on both coated and uncoated samples to evaluate their coefficient of friction (COF) and wear characteristics with time.Uncoated samples had higher, less stable COF values, and a more severe wear rate under increasing load and speed, indicating that the surface of those samples was degraded and more susceptible to frictional heat buildup and lesser durability. With the application of coating, the COF profiles have lower values and exhibit a more stable trend, while the wear rate is also reduced. Further, the wear rates are also considerably reduced with the use of coating at above 20 N load. The coating obstructed molecules from adhering to the surface, thereby aiding in surface interaction, correcting slip heat and wear. The study confirms that the tribological behaviour of carbon fiber reinforced PC FDM-printed part can be improved with surface coating. Research cited in this article demonstrates that surface engineering can enhance additive manufacturing parameters to develop more durable, low-friction components for demanding mechanical applications.