Mechanisms of micro-groove formation on single-crystal diamond by a nanosecond pulsed laser

Nozomi Takayama, Jiwang Yan

研究成果: Article査読

23 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)299-311
ページ数13
ジャーナルJournal of Materials Processing Technology
243
DOI
出版ステータスPublished - 2017 5月 1

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • モデリングとシミュレーション
  • コンピュータ サイエンスの応用
  • 金属および合金
  • 産業および生産工学

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