Micro-electrical discharge machining of polycrystalline diamond using rotary cupronickel electrode

Jiwang Yan, Kazunori Watanabe, Tojiro Aoyama

研究成果: Article

25 引用 (Scopus)

抄録

Cupronickel was used as the electrode material to fabricate microstructures on polycrystalline diamond by electrical discharge machining (EDM). The electrodes were shaped into tiny rotary wheels driven by the flow of EDM fluid. Results showed that material removal rate was improved by a factor of five compared to conventional electrode materials. Raman spectroscopy and energy dispersive X-ray spectroscopy indicated that graphitization of diamond and diffusion-based chemical reactions between nickel and diamond dominated the EDM process. Effects of electrode rotation rate and discharge energy on the EDM characteristics were clarified. High form accuracy (∼0.5 μm/1 mm) and low surface roughness (∼0.1 μm Ra) were obtained.

元の言語English
ページ(範囲)209-212
ページ数4
ジャーナルCIRP Annals - Manufacturing Technology
63
発行部数1
DOI
出版物ステータスPublished - 2014

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Electric discharge machining
Diamonds
Electrodes
Graphitization
Raman spectroscopy
Chemical reactions
Wheels
Surface roughness
Nickel
Microstructure
Fluids

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

これを引用

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AU - Watanabe, Kazunori

AU - Aoyama, Tojiro

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AB - Cupronickel was used as the electrode material to fabricate microstructures on polycrystalline diamond by electrical discharge machining (EDM). The electrodes were shaped into tiny rotary wheels driven by the flow of EDM fluid. Results showed that material removal rate was improved by a factor of five compared to conventional electrode materials. Raman spectroscopy and energy dispersive X-ray spectroscopy indicated that graphitization of diamond and diffusion-based chemical reactions between nickel and diamond dominated the EDM process. Effects of electrode rotation rate and discharge energy on the EDM characteristics were clarified. High form accuracy (∼0.5 μm/1 mm) and low surface roughness (∼0.1 μm Ra) were obtained.

KW - Diamond

KW - Electrical discharge machining

KW - Microstructure

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