Synthesis of Multilayer Nanostructures Hf–Ti–N from the Plasma Phase

Abstract

The paper presents characteristics of the condensation process of nitride coatings from the plasma phase with ion bombardment (Arc-PVD) using three electrode arc evaporators of titanium and hafnium onto metallic and collagen substrates. The calculated linear deposition rate of titanium nitride coating ranged from 4.44 to 4.95 μm/h at an arc evaporator current of 65 A. The growth rate of hafnium nitride coating at an arc evaporator current of 75 A ranged from 0.72 to 0.82 μm/h with a confidence probability of 0.9. When condensing nitrides from two hafnium evaporators, the coating growth rate was 1.65 nm/s. The strength of the natural protein fibrous material with hafnium nitride coating remained unchanged at 10–2 MPa, and there was no alteration in pore size and vapor permeability. Based on a welding temperature of 100°C, the nanostructure of collagen remained stable. The nanostructure of the condensates represents a multi-layer composition with layer thicknesses of 5–2 nm. Nitride condensates on collagen form as scale-like structures, as well as threads with a diameter of 30 nm and lengths up to 5 μm. High corrosion resistance and hardness have been established, recommending the produced material for reducing the aseptic instability of metallic medical implants in endoprosthetics.