Molecular dynamics simulation of laser-induced graphitization of CVD diamond
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2022-03-27 |
| Journal | Eighth Symposium on Novel Photoelectronic Detection Technology and Applications |
| Authors | Xinrui Cui, Li Guo, Chunyu Zhang, Junjie Zhang, Liang Zhao |
| Institutions | Harbin Institute of Technology, China Academy of Engineering Physics |
| Citations | 4 |
Abstract
Section titled “Abstract”Diamond material has been widely used in the manufacture of high performance optical components due to its excellent mechanical and optical properties. CVD diamond can be used as inertial confinement fusion (ICF) target, X-ray lens of the fourth-generation light source, and infrared window, etc. In order to achieve high quality manufacturing of CVD diamond components, laser-induced graphitization technology can be used to improve the machinability of CVD diamond surface. In this paper, the surface generation mechanism of CVD diamond under laser irradiation were studied by molecular dynamics (MD) simulation. Firstly, a model of polycrystalline CVD diamond under laser ablation was established to reveal removal and evolution of surface materials at the atomic level. The MD simulation results with different grain sizes under laser irradiation were compared, and the influence of grain boundaries and grain size on laser graphitization was determined. Finally, the laser machining processes of CVD diamond were simulated under different laser spot diameters, and the influence of laser area on the graphitization degree of CVD diamond surface was analyzed.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2003 - Machining of electrically conductive CVD diamond tool blanks using EDM[J]
- 2019 - Study on Femtosecond Laser Processing Characteristics of Nano-Crystalline CVD Diamond Coating[J]
- 2021 - Optical Quality Laser Polishing of CVD Diamond by UV Pulsed Laser Irradiation[J]
- 2019 - Experimental Investigation and Theoretical Modeling of Ultrashort Pulse Laser Ablation[D]