Effects of laser scanning speeds on ablation mechanism occurred on low-index lattice planes of single crystal diamond

Yantao Gong; Juncheng Lei; Weiqing Li; Ding-shun She; Wen Yue; Young Shawn

doi:10.1080/26941112.2025.2490141

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Effects of laser scanning speeds on ablation mechanism occurred on low-index lattice planes of single crystal diamond

Research Article | Updated：2025-12-10

- Effects of laser scanning speeds on ablation mechanism occurred on low-index lattice planes of single crystal diamond
- Vol. 5, Issue 1, (2025)
- Affiliations：
  
  1. a School of Engineering and Technology China University of Geosciences,Beijing
  2. c National International Joint Research Center of Deep Geodrilling Equipment China University of Geosciences Beijing
  3. a School of Engineering and Technology China University of Geosciences ()Beijing,Beijing,China
  4. b State Key Laboratory of Deep Earth Exploration and Imaging China University of Geosciences Beijing Beijing China
  5. d Zhengzhou Institute China University of Geosciences,Beijing
  6. e EC Diamond Technology (Shenzhen) Ltd.
- Author bio：
- Funds：
- DOI：10.1080/26941112.2025.2490141
  CLC：
- Published Online：17 April 2025，
  
  Published：17 April 2025
- Accepted：
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Yantao Gong, Juncheng Lei, Weiqing Li, et al. Effects of laser scanning speeds on ablation mechanism occurred on low-index lattice planes of single crystal diamond[J]. 2025, 5(1).
DOI：

Yantao Gong, Juncheng Lei, Weiqing Li, et al. Effects of laser scanning speeds on ablation mechanism occurred on low-index lattice planes of single crystal diamond[J]. 2025, 5(1). DOI： 10.1080/26941112.2025.2490141.

摘要

Abstract

The speed of laser scanning significantly influences the temporal and energetic distribution of the interaction between the laser and the material

thereby impacting both the material removal rate and processing quality. For the purposes of improving the laser machining efficiency on the (100)

(110)

and (111) low-index lattice planes of single crystal diamond

laser ablation experiments have been carried out under the laser scanning speeds of 10

and 50 mm/s. The effects of laser scanning speed on the depth

width

material removal rate (MRR) and surface morphology of the ablation microgrooves have been investigated to reveal ablation mechanism of single crystal diamond with anisotropy performances. The experimental findings indicate that a high laser scanning speed leads to the formation of narrow and shallow microgrooves with a rougher edge and a low material removal rate

owing to combined effects of oxidation and graphitization occurred on the low-index lattice planes of single crystal diamond. Compared with the (110) and (111) lattice planes

the microgrooves on the (100) lattice plane exhibit a greater width

a less depth

a low depth-to-width ratio and a higher material removal rate

attributed to the small atomic planar density

large interplanar spacing

and small binding energy between the adjacent crystal planes. As the laser scanning speed reduce to 20 mm/s

the material removal rate on the (100)

(110)

and (111) low-index lattice planes of single crystal diamond grow slowly

resulting from the progressively intensified plasma shielding effects during laser-material interaction.

关键词

Keywords

references

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