International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The protective coating on a cubic-shaped titanium sample was deposited by the plasma method in an argon atmosphere in several stages, in order to form a continuous barrier on all surfaces of the sample. It was shown that, when the protective coating was deposited by the specified method, partial or complete melting of the powders occurred, and subsequently, when they were deposited on the surface of the substrate, active interaction occurred. This made it possible to form a sufficiently continuous layer on the surface of titanium due to mutual diffusion. It is found out that the deposited protective coating allows titanium to be heated up to 400 ± 10 °C in a hydrogen atmosphere (hydrogen pressure 0.6 ± 0.2 MPa) without interaction with the gas.

The physic-technological basis for fabrication of bulk rods and plates of amorphous, amorphous-nanocrystalline and 100% nanocrystalline alloys at melt cooling rates from 80 to 3200 K/s with crystal sizes from 10 to 50 nm has been developed. The multiphase structure formed in the initial bulk samples, as well as in the process of nanocrystallization of amorphous ribbons, is characterized by record microhardness values of 17-22 GPa. Amorphous powders (20-100 μm) of Fe55Ni8Co6Mo4Cr2V1Al2P9C6B5Si2 and Fe61.37Co6.84Cr3.78V0.85W0.82Mo1.06Nb0.85B19.87C1.99Si2.57 alloys are used to create a wear-resistant coating on structural stainless steels and low-carbon St3 by the gas-thermal “cold” method » sputtering and subsequent melting of the applied layer.The values of microhardness (Hμ) of nano-coatings significantly exceed the microhardness of all known tool steels. Examples of technology transfer and practical using of developed amorphous and nanocrystalline alloys are presented.