The paper continues the investigation focused on various factors of wear of coatings deposited on metal-cutting tools. The paper presents the results of the investigation focused on the wear process typical for tools with the Ti-TiN-(Ti,Cr,Mo,Al)N multilayer nanostructured wear-resistant coating during the turning of steel. Particular attention has been paid to the study of the diffusion of iron (Fe) from the material being machined into the coating and of coating elements into the material being machined. It has been found that the diffusion of iron into the nanolayer structure of the coating is of periodic decaying pattern. Nanolayers of the coating with the high content of Cr-Mo exhibit the best barrier functions with respect to the diffusion of iron. The investigation has revealed the active oxidation of the layer of the material being machined in contact with the coating, with the noticeable formation of individual grains of iron oxide, which can have an abrasive effect on the coating surface. The studies have detected the diffusion of iron into the coating to a depth not exceeding 300–400 nm and the diffusion of coating elements (primarily, chromium) into the material being machined to a depth not exceeding 100 nm. The process of crack formation in the coating and the role of the crystalline structure and internanolayer interfaces in the inhibition of crack propagation have been investigated.

本文继续对沉积在金属切削刀具上的涂层磨损的各种因素进行调查。本文介绍了研究结果，重点关注具有 Ti-TiN-(Ti,Cr,Mo,Al)N 多层纳米结构耐磨涂层的刀具在钢车削过程中的典型磨损过程。特别关注铁（Fe）从被加工材料扩散到涂层和涂层元素扩散到被加工材料的研究。已经发现铁扩散到涂层的纳米层结构中具有周期性衰减模式。具有高含量 Cr-Mo 涂层的纳米层对铁的扩散表现出最好的阻挡功能。调查显示，与涂层接触的被加工材料层发生活性氧化，明显形成单个氧化铁颗粒，这会对涂层表面产生磨蚀作用。研究已经检测到铁扩散到涂层中的深度不超过 300-400 纳米，以及涂层元素（主要是铬）扩散到被加工材料中的深度不超过 100 纳米。研究了涂层中裂纹形成的过程以及晶体结构和纳米层界面在抑制裂纹扩展中的作用。研究已经检测到铁扩散到涂层中的深度不超过 300-400 纳米，以及涂层元素（主要是铬）扩散到被加工材料中的深度不超过 100 纳米。研究了涂层中裂纹形成的过程以及晶体结构和纳米层界面在抑制裂纹扩展中的作用。研究已经检测到铁扩散到涂层中的深度不超过 300-400 纳米，以及涂层元素（主要是铬）扩散到被加工材料中的深度不超过 100 纳米。研究了涂层中裂纹形成的过程以及晶体结构和纳米层界面在抑制裂纹扩展中的作用。