Structure and Properties of Co-Cr Coatings After a Pulsed Jet Treatment

Presents new results on formation and structure of plasma jet, its interaction with working surface regions (in situ). Operation principles of plasma-detonation device (Impulse-6) and application of this technology for Co-Cr coating deposition and tool surface hardening were described. Obtained experimental values of jet parameters (temperature, duration, power), as well as time scanning for current pulses and voltages allowed us to optimize jet parameters for deposition of ceramic, metal-ceramic and alloy coatings to stainless steel substrates. Coating structure was mainly composed of alpha-fcp- and beta-fcc-cobalt. Selected temperature interval for coating formation, according to XRD analysis, allowed us to form inter-metalloid compounds of CoxCry-type cobalt with chromium.