Ablation of a WC-Co alloy by impact to high-power nanosecond ultraviolet laser pulses to modify the surface prior to diamond coating
Zheleznov V. Yu. 1, Malinskiy T. V. 1, Rogalin V.E. 1, Khomich Yu. V. 1, Ashkinazi E.E. 2, Sovyk D. N. 2, Zavedeev E.V. 2, Fedorov S.V. 3, Litvinov A.P4
1Institute for Electrophysics and Electric Power, Russian Academy of Sciences, St. Petersburg, Russia
2Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
3Moscow State Technological University STANKIN, Moscow, Russia
4Moscow Polytechnic University, Moscow, Russia
Email: vyuzheleznov@ieeras.ru, tmalinsky@yandex.ru, v-rogalin@mail.ru, ykhomich@yandex.ru, jane50@list.ru, sovyk@nsc.gpi.ru, dodeskoden@gmail.com, sv.fedorov@icloud.com, mrArtem.litvinov35801@mail.ru

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Ablation of a WC-Co alloy under exposure to high-power nanosecond ultraviolet laser pulses on purpose to modify the surface before application of diamond coating The surface of a WC-Co hard alloy was modified by scanning radiation from focused beams of a nanosecond ultraviolet (UV) laser. After exposure, chemical etching was carried out using the Murakami and Caro method and subsequent magnetron sputtering of a tungsten layer 600 nm thick. The optimal mode of preliminary laser heat treatment of the WC-9% Co alloy for the purpose of the upcoming application of diamond coating has been determined. This is We=1-2 J/cm2. Keywords: laser heat treatment, carbide (WC-Co), tungsten carbide, surface modification, diamond coating (DC).
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