Hybrid nanosuspensions were synthesised through ultrasonically dispersing ZrO₂ or TiO₂ nanoparticles into graphene oxide (GO) nanosheet solutions for water-based lubrication. The effect of contact pair roughness on the tribological behaviours of the ZrO₂/GO and TiO₂/GO hybrid nanosuspensions were investigated using a block-on-ring testing approach. With a relatively smooth ring, the use of the nanosuspensions could reduce abrasive wear, and hence improve worn surface quality, owing to the relieved asperity ploughing. With a ring of moderate roughness, the use of the nanosuspensions suppressed the occurrence of adhesive wear through relieving the effect of asperity contact. With a relatively rough ring, the nanosuspensions generated a deposited layer of hybrid nanoparticles at the contact area that can prevent surface asperities from direct contact, thus leading to lower adhesive wear and friction.

通过将ZrO ₂或TiO ₂纳米粒子超声分散到氧化石墨烯（GO）纳米片溶液中进行水基润滑，可以合成杂化纳米悬浮液。接触对粗糙度对ZrO ₂ / GO和TiO ₂摩擦学行为的影响/ GO混合纳米悬浮液使用环上阻滞测试方法进行了研究。在相对光滑的环的情况下，由于缓解了凹凸不平，纳米悬浮液的使用可以减少磨料磨损，从而改善磨损的表面质量。具有中等粗糙度的环，纳米悬浮液的使用通过减轻粗糙接触的影响，抑制了粘合剂磨损的发生。在相对粗糙的环的情况下，纳米悬浮液在接触区域生成了杂化纳米颗粒的沉积层，可以防止表面粗糙直接接触，从而降低了粘合剂的磨损和摩擦。