Effect of crystal structure on the tribological properties of diamond coatings on hard-alloy cutting tools


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Abstract

Micro- and nanocrystalline uniform diamond coatings with barrier tungsten layers for improved adhesion were deposited in a microwave plasma from methane-hydrogen mixtures on cemented carbide WC–6% Co substrates with high aspect ratios. Dynamic study of cutting forces and sliding friction has shown a significant improvement in the tribological properties of diamond-coated tools in cutting highly abrasive materials, such as A390 silumin and carbon-carbon composites. Confocal Raman spectrometry has been used to examine the features of wear mechanism in nano- and microcrystalline diamond coatings deposited in a microwave plasma.

About the authors

E. E. Ashkinazi

Prokhorov General Physics Institute; National Research Nuclear University MEPhI

Author for correspondence.
Email: jane50@list.ru
Russian Federation, Moscow, 119991; Moscow, 115409

V. S. Sedov

Prokhorov General Physics Institute; National Research Nuclear University MEPhI

Email: jane50@list.ru
Russian Federation, Moscow, 119991; Moscow, 115409

M. I. Petrzhik

National University of Science and Technology MISiS

Email: jane50@list.ru
Russian Federation, Moscow, 119049

D. N. Sovyk

Prokhorov General Physics Institute; National Research Nuclear University MEPhI

Email: jane50@list.ru
Russian Federation, Moscow, 119991; Moscow, 115409

A. A. Khomich

Prokhorov General Physics Institute; Kotel’nikov Institute of Radio Engineering and Electronics

Email: jane50@list.ru
Russian Federation, Moscow, 119991; Fryazino, Moscow oblast, 141190

V. G. Ralchenko

Prokhorov General Physics Institute; National Research Nuclear University MEPhI; Harbin Institute of Technology

Email: jane50@list.ru
Russian Federation, Moscow, 119991; Moscow, 115409; Harbin, 150001

D. V. Vinogradov

Prokhorov General Physics Institute; Bauman Moscow State Technical University

Email: jane50@list.ru
Russian Federation, Moscow, 119991; Moscow, 105005

P. A. Tsygankov

Prokhorov General Physics Institute; Bauman Moscow State Technical University

Email: jane50@list.ru
Russian Federation, Moscow, 119991; Moscow, 105005

I. N. Ushakova

Baikov Institute of Metallurgy and Material Science

Email: jane50@list.ru
Russian Federation, Moscow, 119991

A. V. Khomich

Prokhorov General Physics Institute; Kotel’nikov Institute of Radio Engineering and Electronics

Email: jane50@list.ru
Russian Federation, Moscow, 119991; Fryazino, Moscow oblast, 141190

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