Nanomechanical and Nanotribological Properties of Nanostructured Coatings of Tantalum and Its Compounds on Steel Substrates
Galina Melnikova,
Tatyana Kuznetsova,
Vasilina Lapitskaya,
Agata Petrovskaya,
Sergei Chizhik,
Anna Zykova,
Vladimir Safonov,
Sergei Aizikovich,
Evgeniy Sadyrin,
Weifu Sun,
Stanislav Yakovin
Affiliations
Galina Melnikova
Laboratory of Nanoprocesses and Technologies, A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovki Str., 220072 Minsk, Belarus
Tatyana Kuznetsova
Laboratory of Nanoprocesses and Technologies, A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovki Str., 220072 Minsk, Belarus
Vasilina Lapitskaya
Laboratory of Nanoprocesses and Technologies, A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovki Str., 220072 Minsk, Belarus
Agata Petrovskaya
Laboratory of Nanoprocesses and Technologies, A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovki Str., 220072 Minsk, Belarus
Sergei Chizhik
Laboratory of Nanoprocesses and Technologies, A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovki Str., 220072 Minsk, Belarus
Anna Zykova
National Science Center “Kharkov Institute of Physics and Technology”, 1 Akademicheskaya Str., 61108 Kharkov, Ukraine
Vladimir Safonov
National Science Center “Kharkov Institute of Physics and Technology”, 1 Akademicheskaya Str., 61108 Kharkov, Ukraine
Sergei Aizikovich
Research and Education Center “Materials”, Don State Technical University, 1 Gagarin Sq., 344003 Rostov-on-Don, Russia
Evgeniy Sadyrin
Research and Education Center “Materials”, Don State Technical University, 1 Gagarin Sq., 344003 Rostov-on-Don, Russia
Weifu Sun
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
The present paper addresses the problem of identification of microstructural, nanomechanical, and tribological properties of thin films of tantalum (Ta) and its compounds deposited on stainless steel substrates by direct current magnetron sputtering. The compositions of the obtained nanostructured films were determined by energy dispersive spectroscopy. Surface morphology was investigated using atomic force microscopy (AFM). The coatings were found to be homogeneous and have low roughness values (<10 nm). The values of microhardness and elastic modulus were obtained by means of nanoindentation. Elastic modulus values for all the coatings remained unchanged with different atomic percentage of tantalum in the films. The values of microhardness of the tantalum films were increased after incorporation of the oxygen and nitrogen atoms into the crystal lattice of the coatings. The coefficient of friction, CoF, was determined by the AFM method in the “sliding” and “plowing” modes. Deposition of the coatings on the substrates led to a decrease of CoF for the coating-substrate system compared to the substrates; thus, the final product utilizing such a coating will presumably have a longer service life. The tantalum nitride films were characterized by the smallest values of CoF and specific volumetric wear.
