Comparative Analysis of Tribological and Functional Properties of Multilayer Composite Nanostructured Coatings Based on Nitrides of Cr, Mo, Zr, Nb, and Al

Abstract

The article describes the results of the studies focused on the properties of multilayer composite coatings with nanolayer structures based on nitrides of Cr, Mo, Zr, Nb, and Al. Tests were carried out to study the influence of temperature varying in the range of 600–1000 ℃ on the value of the adhesion component of the coefficient of friction (COF). The investigation was also focused on the cutting properties of carbide tools with the coating understudy during the turning of AISI 321 steel at various cutting speeds. The study revealed the relationship between the value of the adhesion component of the COF and the tool life of coated cutting tools. The tool with the Cr,Mo-(Cr,Mo)N-(Cr,Mo,Al)N coating under study demonstrated good wear resistance on the tool’s rake face during the cutting of corrosion and heat-resistant AISI 321 steel. With an increase in the cutting speed, the cutting properties of the tool with the coating understudy increase compared to the tools with other coatings or uncoated tools.