Development of CNT-Coated Diamond Grains Using Self-Assembly Techniques for Improving Electroplated Diamond Tools

Tsunehisa Suzuki; Toshiaki Mitsui; Tomoki Fujino; Mutsuto Kato; Yasufumi Satake; Hiroshi Saito; Seiya Kobayashi

doi:10.4028/www.scientific.net/KEM.389-390.72

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 389-390Development of CNT-Coated Diamond Grains Using...

Development of CNT-Coated Diamond Grains Using Self-Assembly Techniques for Improving Electroplated Diamond Tools

Abstract:

Single crystalline diamond grains covered by nested carbon nanotubes (CNTs) were constructed using self-assembly techniques. The acid-treated CNTs (MWCNTs-COOH) are first adsorbed onto amine-terminated diamond grains, which were chemically functionalized by silane coupling treatments, in N, N-dimethylformamide solution. Then, the drying and readsorption cycle deposited CNT coatings on the diamond grains due to CNT-CNT interactions caused by van der Waals forces. When the diamond grains were bonded to steel substrates by electroplating using nickel sulfamate plating bath, the bonding strength of the CNT-coated diamond grains to the Ni matrix was almost twice as large as that of the normal diamond grains. Hence, the CNT-coated diamond grains are very useful for improving the tool life of electroplated diamond tools.

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Periodical:

Key Engineering Materials (Volumes 389-390)

Pages:

72-76

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.389-390.72

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Online since:

September 2008

Authors:

Tsunehisa Suzuki, Toshiaki Mitsui, Tomoki Fujino, Mutsuto Kato, Yasufumi Satake, Hiroshi Saito, Seiya Kobayashi

Keywords:

Carbon Nanotube (CN), Electroplated Diamond Tool, Grain Retentivity, Self-Assembly

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