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<p>The tribological behavior of Polyamide 66 (PA66) and at different Graphite (Grt) concentration were investigated in this study, mainly focused on enhanced wear resistance. Due to the high strength-to-weight ratio and wear resistance the PA66/33GF composite were used widely in the automotive, aerospace and industrial sector. Also, Grt is added to the composite to enhance the properties of tribology, wear in sliding and friction reduction. The tribological behavior of the composite with Grt of 3 wt.%, 5 wt.% and without Grt were prepared and tested under various speed at 200&#xa0;rpm, 300&#xa0;rpm &amp; 400&#xa0;rpm and load conditions at 10 N, 20 N and 30 N. The CoF and wear rates where measured, and morphological analysis was conducted to understand the wear mechanisms. Results indicates that the sample 6 with 3 wt.% has observed smoother surface of Ra 0.3872&#xa0;µm at 200&#xa0;rpm speed and 30 N load and sample 5 with 3 wt.% Grt exhibited lowest wear loss of 0.0008&#xa0;g at 400&#xa0;rpm speed and 20 N load. The optimal CoF observed is for 5 wt.% Grt sample at 300&#xa0;rpm and 30 N load, the lowest CoF evident is 0.29. The contour plot indicates 3 wt.% Grt helps in reducing wear, where load should be minimal and at moderate spindle speed. Finally, a 5 wt.% Grt content at 300&#xa0;rpm and 30 N may offer slightly lower CoF values under specific conditions but the 3 wt.% concentration strikes an optimal balance between lubrication and maintaining the mechanical integrity of the composite.</p>

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Tribological Evaluation of Polyamide 66 (PA66)/33GF Graphite (Grt) Behavior

  • 期刊论文

  • 发表日期：

    2025年9月16日

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  • Mathew Alphonse,
  • Ben Samuel Johny

摘要

The tribological behavior of Polyamide 66 (PA66) and at different Graphite (Grt) concentration were investigated in this study, mainly focused on enhanced wear resistance. Due to the high strength-to-weight ratio and wear resistance the PA66/33GF composite were used widely in the automotive, aerospace and industrial sector. Also, Grt is added to the composite to enhance the properties of tribology, wear in sliding and friction reduction. The tribological behavior of the composite with Grt of 3 wt.%, 5 wt.% and without Grt were prepared and tested under various speed at 200 rpm, 300 rpm & 400 rpm and load conditions at 10 N, 20 N and 30 N. The CoF and wear rates where measured, and morphological analysis was conducted to understand the wear mechanisms. Results indicates that the sample 6 with 3 wt.% has observed smoother surface of Ra 0.3872 µm at 200 rpm speed and 30 N load and sample 5 with 3 wt.% Grt exhibited lowest wear loss of 0.0008 g at 400 rpm speed and 20 N load. The optimal CoF observed is for 5 wt.% Grt sample at 300 rpm and 30 N load, the lowest CoF evident is 0.29. The contour plot indicates 3 wt.% Grt helps in reducing wear, where load should be minimal and at moderate spindle speed. Finally, a 5 wt.% Grt content at 300 rpm and 30 N may offer slightly lower CoF values under specific conditions but the 3 wt.% concentration strikes an optimal balance between lubrication and maintaining the mechanical integrity of the composite.