Ablation of a WC–Co alloy by impact to high-power nanosecond ultraviolet laser pulses to modify the surface prior to diamond coating

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/cm$^2$.