Kuban State Technological University (Krasnodar, Russia):

A. E. Litvinov, Dr. Eng., Associate Prof., Head of the Dept., e-mail: artstyleone@mail.ru

E. Yu. O. Balaev, Senior Lecturer, e-mail: balaev1122@mail.ru

Kuban State Technological University (Krasnodar, Russia)¹ ; Kuban State University (Krasnodar, Russia)²:

V. Yu. Buzko, Cand. Chem., Associate Prof., Director of the Center for Advanced Technologies and Nanomaterials^1,2
S. N. Ivanin, Cand. Chem., Researcher, Center for Advanced Technologies and Nanomaterials^1,2

High-speed steel M42, which is used as material for saw teeth in the most popular bimetallic saws, is considered as one of the most universal high-speed steel grades. This steel is characterized by high hardness (HRC 64-67), excellent heat resistance up to 700 °C, good wear resistance and is suitable for cutting of stainless steels with hardness up to 50 HRC. Nanostructured wear-resistant high-hard coatings with high physical and mechanical properties, resistance to impact and vibration loads promotes increase of wear resistance and service life of band saws. The films of hard diamondlike carbon (DLC), containing amorphous carbon with disordered graphite ordering, which is striving to a tetrahedral diamond-like coordination, are interesting for material scientists due to their excellent mechanical and tribological properties. Dense and hard carbon films with structure of nanoparticles having size 12-17 nm, were applied on highspeed steel M42 (according to AISI) via the method of high-frequency magnetronic sputtering. Microhardness of DLC film of high-speed steel M42 (M42 HSS) by Vickers with the coating thickness 800 nm was 838±19 in comparison with 783±18 for a clean sample of the same steel. Good microstructure, wear protection properties and high temperature oxidation protection of obtained carbon nanostructured films on the surface of M42 HSS are observed.

The research was conducted under support of the Council of grants of RF President (Agreement No. MD-2727.2022.4).

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