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The effects of diamond amorphous layer on the diamond lapping surface

机译：金刚石无定形层对金刚石研磨表面的影响

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摘要

The diamond presents its versatile applications in chemical, electrical, optical, mechanical and thermal field. Until now, mechanical polishing is the efficient and low-cost technology to shape the diamond to the desired geometry. However, the defects, or amorphization, of the diamond surface is inevitable during the lapping process. This amorphization layer has some adverse effects on the application of diamond. In this paper, the effects of diamond amorphous layer on the diamond lapping surface integrity are studied. By molecular dynamics (MD) simulation method, it is investigated that a diamond sample covered with an amorphous layer is scratched by a diamond abrasive particle. The formed amorphous layer on the diamond lapping surface is analyzed in terms of the distribution of different types of carbon atoms and surface stress. Our work gives an atomic insight into the integrity of the diamond surface with amorphous layer, based on which our understanding on the diamond lapping surface is deepened.
机译：该钻石在化学，电气，光学，机械和热学领域具有广泛的用途。到目前为止，机械抛光是将钻石成形为所需几何形状的有效且低成本的技术。然而，在研磨过程中不可避免地出现金刚石表面的缺陷或非晶化。该非晶化层对金刚石的应​​用有一些不利影响。在本文中，研究了金刚石无定形层对金刚石研磨表面完整性的影响。通过分子动力学（MD）模拟方法，研究了覆盖有无定形层的金刚石样品被金刚石磨料颗粒刮擦。根据不同类型碳原子的分布和表面应力，对金刚石研磨表面上形成的非晶层进行了分析。我们的工作提供了对具有非晶层的金刚石表面完整性的原子洞察力，在此基础上，我们对金刚石研磨表面的理解得到了加深。

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