论文标题
自润滑碳材料对超高分子重量聚乙烯的摩擦学性能的影响
Effect of Self-Lubricating Carbon Materials on the Tribological Performance of Ultra-High-Molecular-Weight Polyethylene
论文作者
论文摘要
超高分子重量聚乙烯（UHMWPE）已成为总膝盖替换的金标准。由于膝盖的自然运动，UHMWPE磨损碎片的产生是不可避免的。在微米和亚微米水平上的碎屑会导致关节的机械不稳定性，减少迁移率，增加疼痛和植入物松动。磨损碎屑的产生与UHMWPE机械性能有关；因此，提高UHMWPE机械性能的改进将影响组件的寿命。在这里，使用TIC涂料和多壁碳纳米管（MWCNT）来降低UHMWPE磨损。在400,000个周期后，与UHMWPE相比，UHMWPE-MWCNT减少了质量损失，与参考对相比，与TIC的组合相比，材料损失降低了约43.7％。冷流和抛光是主要的磨损模式。
Ultra-high-molecular-weight polyethylene (UHMWPE) has been the gold standard for total knee replacements. Due to the knee's natural movements, UHMWPE wear debris production is inevitable. The debris, at the micron and submicron level, results in the joint's mechanical instability, reduced mobility, increased pain, and implant loosening. Wear debris production has been linked to UHMWPE mechanical properties; therefore, improvements to increase the UHMWPE mechanical properties will impact the component's longevity. Here, TiC coating and multiwalled carbon nanotubes (MWCNTs) were used to decrease the UHMWPE wear. After 400,000 cycles, the UHMWPE-MWCNT diminishes the mass loss compared to UHMWPE, and the combination with TiC decreased the material loss by ~ 43.7 % compared to the reference pair. Cold-flow and burnishing were the predominant wear modes.
