Abstract
Micro-grooves were machined onto a single-crystal diamond surface by laser irradiation with a nanosecond pulse, and the resulting damage was investigated. The causes of four different forms of damage have been identified and examined; cracking, ripple formation, groove shape deformation and debris deposition. Cracking is caused by a rapid temperature change; ripples by interference of the laser reflected from the groove walls; groove shape deformation by enhanced absorption of the laser-induced plasma; deposited ablation debris by two different ablation regimes. Cracking and shape deformation is reduced at the center of the groove, which is very smooth and ripple-free for line irradiations using a single pass. These results provide useful information for reducing the laser-induced damage in diamond and creating damage-free micro-grooved diamond cutting tools.
| Original language | English |
|---|---|
| Pages (from-to) | 299-311 |
| Number of pages | 13 |
| Journal | Journal of Materials Processing Technology |
| Volume | 243 |
| DOIs | |
| Publication status | Published - 2017 May 1 |
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Keywords
- Groove formation
- Laser processing
- Micromachining
- Nd:YAG laser
- Single-crystal diamond
- Surface microstructure
- Thermal ablation
ASJC Scopus subject areas
- Ceramics and Composites
- Modelling and Simulation
- Computer Science Applications
- Metals and Alloys
- Industrial and Manufacturing Engineering
Cite this
Mechanisms of micro-groove formation on single-crystal diamond by a nanosecond pulsed laser. / Takayama, Nozomi; Yan, Jiwang.
In: Journal of Materials Processing Technology, Vol. 243, 01.05.2017, p. 299-311.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mechanisms of micro-groove formation on single-crystal diamond by a nanosecond pulsed laser
AU - Takayama, Nozomi
AU - Yan, Jiwang
PY - 2017/5/1
Y1 - 2017/5/1
N2 - Micro-grooves were machined onto a single-crystal diamond surface by laser irradiation with a nanosecond pulse, and the resulting damage was investigated. The causes of four different forms of damage have been identified and examined; cracking, ripple formation, groove shape deformation and debris deposition. Cracking is caused by a rapid temperature change; ripples by interference of the laser reflected from the groove walls; groove shape deformation by enhanced absorption of the laser-induced plasma; deposited ablation debris by two different ablation regimes. Cracking and shape deformation is reduced at the center of the groove, which is very smooth and ripple-free for line irradiations using a single pass. These results provide useful information for reducing the laser-induced damage in diamond and creating damage-free micro-grooved diamond cutting tools.
AB - Micro-grooves were machined onto a single-crystal diamond surface by laser irradiation with a nanosecond pulse, and the resulting damage was investigated. The causes of four different forms of damage have been identified and examined; cracking, ripple formation, groove shape deformation and debris deposition. Cracking is caused by a rapid temperature change; ripples by interference of the laser reflected from the groove walls; groove shape deformation by enhanced absorption of the laser-induced plasma; deposited ablation debris by two different ablation regimes. Cracking and shape deformation is reduced at the center of the groove, which is very smooth and ripple-free for line irradiations using a single pass. These results provide useful information for reducing the laser-induced damage in diamond and creating damage-free micro-grooved diamond cutting tools.
KW - Groove formation
KW - Laser processing
KW - Micromachining
KW - Nd:YAG laser
KW - Single-crystal diamond
KW - Surface microstructure
KW - Thermal ablation
UR - http://www.scopus.com/inward/record.url?scp=85008394114&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85008394114&partnerID=8YFLogxK
U2 - 10.1016/j.jmatprotec.2016.12.032
DO - 10.1016/j.jmatprotec.2016.12.032
M3 - Article
AN - SCOPUS:85008394114
VL - 243
SP - 299
EP - 311
JO - Journal of Materials Processing Technology
JF - Journal of Materials Processing Technology
SN - 0924-0136
ER -