Abstract Bio-inspired Al2O3/rGO fibrous monolithic ceramics with bamboo-like architectures exhibit excellent fracture-resistant behaviors and high structural reliability. The tribological performances and wear mechanisms of these composites were investigated in this study. Results showed that the composites exhibited relatively moderate tribological behaviors with lower and more stable friction coefficients and wear rates compared with monolithic Al2O3 ceramic. The wear rate can decrease to 1.5×10-8 mm3/Nm with a conspicuous drop of more than an order of magnitude. This superior friction-reducing and wear-resistant performance mainly depended on rGO boundaries, which formed discontinuous lubricating films, to reduce direct contact of friction pairs and promote lubricating properties. The influences of fiber cell diameter and applied load on tribological behaviors were also discussed.

中文翻译：

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具有竹结构的Al2O3/rGO纤维整体陶瓷的摩擦磨损行为

摘要 仿竹结构的仿生 Al2O3/rGO 纤维整体陶瓷表现出优异的抗断裂性能和高结构可靠性。本研究研究了这些复合材料的摩擦学性能和磨损机制。结果表明，与整体式 Al2O3 陶瓷相比，复合材料表现出相对温和的摩擦学行为，具有更低且更稳定的摩擦系数和磨损率。磨损率可下降到1.5×10-8 mm3/Nm，下降幅度超过一个数量级。这种优异的减摩耐磨性能主要依赖于rGO边界，形成不连续的润滑膜，减少摩擦副的直接接触，提高润滑性能。