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Influence of Cobalt on the Adhesion Strength of Polycrystalline Diamond Coatings on WC–Co Hard Alloys

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Abstract

The influence of cobalt on the phase composition and adhesion strength of polycrystalline diamond coatings has been studied using scanning electron microscopy, Raman spectroscopy, and X-ray microanalysis. The coatings have been deposited on WC–Co hard alloy substrates in glow discharge plasma. It has been found that the catalytic amorphization of carbon only takes place during the direct synthesis of the diamond coating, when the cobalt vapor pressure over the substrate is high and the cobalt-related degradation of the synthesized diamond is absent.

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Authors and Affiliations

  1. National Research Tomsk Polytechnic University, ul. Lenina 30, Tomsk, 634034, Russia

    S. A. Linnik, A. V. Gaidaichuk & V. V. Okhotnikov

Authors
  1. S. A. Linnik
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  2. A. V. Gaidaichuk
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  3. V. V. Okhotnikov
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Correspondence to S. A. Linnik.

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Original Russian Text © S.A. Linnik, A.V. Gaidaichuk, V.V. Okhotnikov, 2018, published in Zhurnal Tekhnicheskoi Fiziki, 2018, Vol. 63, No. 2, pp. 214–218.

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Linnik, S.A., Gaidaichuk, A.V. & Okhotnikov, V.V. Influence of Cobalt on the Adhesion Strength of Polycrystalline Diamond Coatings on WC–Co Hard Alloys. Tech. Phys. 63, 206–210 (2018). https://doi.org/10.1134/S1063784218020226

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  • DOI: https://doi.org/10.1134/S1063784218020226

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