Аннотация:The purpose of the present study was to determine the optimal values of selected deposition parameters of diamond-like-carbon coatings (DLC) with the modified cathodic vacuum arc (MCVA) method which ensure obtaining of their most advantageous properties from the perspective of their application for the coating on high-speed steel tool substrates for woodworking. An analysis was conducted of the investigations into the influence of the selected deposition parameters of DLC coatings on the accepted optimization criteria with the use of the Taguchi module. Adhesion, hardness and friction wear resistance were accepted as the optimization criteria of DLC coatings for high-speed steel substrates.