EDM Properties of EC-PCD Manufactured Using Electrically Conductive Diamond Particles

Shinichi Ninomiya; Manabu Iwai; Takuya Takada; Zhi Rong Zhou; Kiyoshi Suzuki

doi:10.4028/www.scientific.net/KEM.516.148

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EDM Properties of EC-PCD Manufactured Using Electrically Conductive Diamond Particles
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 516EDM Properties of EC-PCD Manufactured Using...

EDM Properties of EC-PCD Manufactured Using Electrically Conductive Diamond Particles

Abstract:

Electrically conductive polycrystalline composite diamond (EC-PCD), which consists of electrically conductive diamond particles manufactured by doping boron atoms, has recently been developed for the purpose of providing material with both excellent tool properties and good machinability. This paper deals with an investigation into the machinability of EC-PCD by EDM with a copper electrode. As a result, it was found that the material removal rate of EC-PCD made up of diamond particles of 10 and 25 µm in diameter respectively was far higher than that of the conventional PCD. Furthermore, it was confirmed in the single pulse EDM experiment with a needle electrode that the EC diamond region in the EC-PCD was removed together with the cobalt region whereas only the cobalt region of C-PCD was removed when the electrode was set at plus polarity.

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Periodical:

Key Engineering Materials (Volume 516)

Pages:

148-153

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.516.148

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Online since:

June 2012

Authors:

Shinichi Ninomiya, Manabu Iwai, Takuya Takada, Zhi Rong Zhou, Kiyoshi Suzuki

Keywords:

Boron Doped Diamond, EC-PCD, EDM Property, Electrically Conductive Diamond, PCD

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References

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