Towards a deeper understanding of superlubricity on graphite governed by interfacial adhesion

Graphite or graphene due to its excellent tribological properties is highly expected in solid lubrications, where the friction behaviors are intimately related to interfacial adhesion; however, the fundamental mechanism governing their correlation remains scientifically intriguing and largely unexplored. Through the combination of atomic force microscopy (AFM) measurements and density functional theory (DFT) calculations, we demonstrated that the friction of graphite surface slid against various AFM probes is generally enlarged with stronger adhesive interaction due to the higher interfacial charge density. The correlation between friction and adhesion mainly originates from the sliding induced charge evolution which governs the energy dissipation of solid lubrication between graphite and bulk materials. A general strategy that suppresses charge flowed into contact region enables the superlubricity of graphene or graphite surface owing to the feeble adhesion of the sliding systems. It is thereby proposed that the superlubricity is generally favored by weak interaction of the sliding interfaces.

成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周老师

联系电话:13321314106

成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周老师

联系电话:13321314106

成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周老师

联系电话:13321314106

成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周老师

联系电话:13321314106

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