Abstract:

The paper focused on the high-performance requirements for diamond engineering surfaces in high-tech fields such as aerospace， micro-electro-mechanical systems， biomedicine， and nuclear energy. It addressed key challenges including the susceptibility of diamond to graphitization and amorphization under high loads and contact with ferrous metals， as well as the poor frictional behavior of conventional diamond surfaces. A novel concept of “in-situ instantaneous transformation” of diamond surfaces into graphene was proposed， along with the development of a laser induced-flywheel mechanical cleavage method. This method successfully stabilized a unique diamond-nano-graphite-graphene covalent structure in ambient conditions. Experimental results demonstrate that this new structure synergizes the excellent properties of diamond， graphite， and graphene. It offers a novel approach to resolving engineering bottlenecks associated with diamond applications and holds promise for opening up new avenues for the use of diamond， diamond coatings， graphene， and all-carbon devices in mechanical， electronic， aerospace， and other fields.

Key words: diamond, graphene, covalent structure, performance synergy, cutting tool

摘要：

面向航空航天、微机电系统、生物医学和核能等高新技术领域对金刚石工程表面的高使役性能需求，以及金刚石在高载/与黑色金属接触等条件下易发生石墨化和非晶化弱化转变、常规金刚石表面摩擦状态差等关键难题，提出金刚石表面石墨烯的“原位瞬时转化”新思想，发明激光诱导-飞轮机械解理方法，并在大气环境中稳定形成了一种独特的金刚石-纳米石墨-石墨烯共价结构。试验表明新结构协同了金刚石、石墨和石墨烯的优异性能，为金刚石工程应用瓶颈问题提供了新的解决途径，并有望为金刚石、金刚石涂层、石墨烯及全碳器件在机械、电子、航空航天等领域开辟新的应用前景。

关键词: 金刚石, 石墨烯, 共价结构, 性能协同, 刀具