Tribological characteristics of cutting tools with ion-modified surface
Some ways of improving tribotechnical characteristics of wear-resistant coatings on high-speed steel cutting tools after ion surface modification are considered. Coatings in two stages are formed: diffusion saturation of nitrogen (nitriding) and deposition (Ti, Cr)N solid coatings by cathode arc discharge plasma (CAPDP). The coating includes an additional ion-doped layer implanted on the previously nitride surface of high-speed steel. This multi-layer coating significantly increases (2.1-2.4 times) the wear-bone of the cutting tool by expanding the stage of normal wear. The compromise between high wear resistance and reliability of the coating, which depend on the degree of adhesion with the sub-spoon, is achieved in a multi-layer coating, which contains a lower layer enriched with indium.