Possibilities of structural engineering in multilayer vacuum-arc ZrN/CrN coatings by varying the nanolayer thickness and application of a bias potential

2016 ◽  
Vol 61 (7) ◽  
pp. 1060-1063 ◽  
Author(s):  
O. V. Sobol’ ◽  
A. A. Andreev ◽  
V. F. Gorban’ ◽  
V. A. Stolbovoy ◽  
A. A. Melekhov ◽  
...  
Keyword(s):  
Structural Engineering ◽  
Vacuum Arc ◽  
Bias Potential ◽  
Nanolayer Thickness ◽  
Crn Coatings

scholarly journals STRUCTURAL ENGINEERING OF NbN/Cu MULTILAYER COATINGS BY CHANGING THE THICKNESS OF THE LAYERS AND THE MAGNITUDE OF THE BIAS POTENTIAL DURING DEPOSITION

2019 ◽  
pp. 147-153
Author(s):  
O.V. Sobol’ ◽  
A.A. Andreev ◽  
V.A. Stolbovoy ◽  
D.A. Kolesnikov ◽  
M.G. Kovaleva ◽  
...  
Keyword(s):  
Crystal Lattice ◽  
Layer Thickness ◽  
Structural Engineering ◽  
Structural Phase ◽  
Structural Type ◽  
Niobium Nitride ◽  
Thin Layers ◽  
Vacuum Arc ◽  
Growth Surface ◽  
Bias Potential

To determine the patterns of structural engineering of vacuum-arc coatings based on niobium nitride in the NbN/Cu multilayer composition, the effect of layer thickness and bias potential on the structural-phase state and physico-mechanical characteristics of vacuum-arc coatings was studied. It was found that the metastable δ-NbN phase (cubic crystal lattice, structural type NaCl) is formed in thin layers (about 8 nm thick) regardless of Ub. With a greater thickness of the layers of niobium nitride (in the multilayer NbN/Cu composition), the phase composition changes from metastable δ-NbN to the equilibrium ε-NbN phase with a hexagonal crystal lattice. An increase in the bias potential during deposition from -50 to -200 V mainly affects the change in the preferential orientation of crystallite growth. The highest hardness (28.2 GРa) and adhesive resistance is achieved in coatings obtained at Ub = -200 V with the smallest layer thickness. The highest hardness corresponds to the structurally deformed state in which the crystallite texture is formed with the [100] axis perpendicular to the growth surface, as well as a large microstrain (1.5%) in crystallites.

scholarly journals Influence of Bias Potential Magnitude on Structural Engineering of ZrN-Based Vacuum-Arc Coatings

2021 ◽  
Vol 22 (1) ◽  
pp. 66-72
Author(s):  
O.V. Sobol’ ◽  
H.O. Postelnyk ◽  
N.V. Pinchuk ◽  
A.A. Meylekhov ◽  
M.A. Zhadko ◽  
...  
Keyword(s):  
Functional Properties ◽  
Structural Engineering ◽  
Preferred Orientation ◽  
Vacuum Arc ◽  
Negative Bias ◽  
Crystal Lattices ◽  
Bias Potential ◽  
The Creation ◽  
Modern Technologies

The creation of the scientific foundations for the structural engineering of ultrathin nanolayers in multilayer nanocomposites is the basis of modern technologies for the formation of materials with unique functional properties. It is shown that an increase in the negative bias potential (from -70 to -220 V) during the formation of vacuum-arc nanocomposites based on ZrN makes it possible not only to control the preferred orientation of crystallites and substructural characteristics but also changes the conditions for conjugation of crystal lattices in ultrafine (about 8 nm) nanolayers.

Structural Engineering of the Multilayer Vacuum Arc Nitride Coatings Based on Ti, Cr, Mo and Zr

2017 ◽  
Vol 9 (3) ◽  
pp. 03003-1-03003-6 ◽  
Author(s):  
O. V. Sobol ◽  
◽  
A. A. Postelnyk ◽  
A. A. Meylekhov ◽  
A. A. Andreev ◽  
...  
Keyword(s):  
Structural Engineering ◽  
Vacuum Arc ◽  
Nitride Coatings

Corrosion behavior of Zr modified CrN coatings using metal vapor vacuum arc ion implantation

2007 ◽  
Vol 25 (1) ◽  
pp. 110-116 ◽  
Author(s):  
K. P. Purushotham ◽  
L. P. Ward ◽  
N. Brack ◽  
P. J. Pigram ◽  
P. Evans ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Corrosion Behavior ◽  
Metal Vapor ◽  
Vacuum Arc ◽  
Crn Coatings

Unfiltered Aluminium Vacuum Arc Plasma Application for High-Frequency Short-Pulse Plasma Immersion Ion Implantation

2014 ◽  
Vol 880 ◽  
pp. 155-160 ◽  
Author(s):  
Alexander Ryabchikov ◽  
Denis Sivin ◽  
Anna Ivanova (Bumagina) ◽  
Evgeniy Bolbasov ◽  
Natalya Daneikina
Keyword(s):  
Ion Implantation ◽  
High Frequency ◽  
Treatment Time ◽  
Short Pulse ◽  
Substrate Surface ◽  
Pulse Plasma ◽  
Vacuum Arc ◽  
Arc Plasma ◽  
Bias Potential ◽  
Plasma Immersion Ion Implantation

This paper is devoted to the studying of the dynamical changes in the density of aluminium microparticles (MPs) on the substrate surface made of stainless steel, immersed in vacuum arc plasma, at high-frequency short-pulse negative bias potential. It is shown experimentally that the density of aluminium MPs on the substrate surface is decreased dynamically by 3 orders when the treatment time is increased from 15 s to 3 min at the bias potential –2 kV. A possibility of the application of MPs unfiltered vacuum arc plasma for high-frequency short-pulse plasma immersion ion implantation to form the intermetallic layers is discussed.

Deposition of CrN Coatings by Filtered Cathodic Vacuum Arc

2008 ◽  
Vol 373-374 ◽  
pp. 130-133 ◽  
Author(s):  
Ji Liang Mo ◽  
Min Hao Zhu ◽  
J. An ◽  
H. Sun ◽  
Yong Xiang Leng ◽  
...  
Keyword(s):  
Partial Pressure ◽  
Bias Voltage ◽  
Vacuum Arc ◽  
Substrate Bias ◽  
Nitrogen Partial Pressure ◽  
Substrate Bias Voltage ◽  
Crn Coating ◽  
Deposition Parameters ◽  
Filtered Cathodic Vacuum Arc ◽  
Crn Coatings

CrN coatings were deposited on cemented carbide substrates by filtered cathodic vacuum arc technique (FCVA). The effect of different deposition parameters: nitrogen partial pressure, substrate-bias voltage and preheating of the substrate, on the structural and mechanical properties of the coating was investigated. X-ray diffraction analysis was used to determine the structure and composition of the coatings. The tribological behaviour and wear properties of the coatings against Si3N4 ball at different normal loads were studied under reciprocating sliding condition. The results showed that a smooth and dense CrN coating with good properties can be obtained provided a pure Cr interlayer was pre-deposited. The optimal deposition parameters were the nitrogen partial pressure of 0.1 Pa, substrate-bias voltage of -100 V. Preheating of the substrate was no good for improving the properties of the coating. The FCVA CrN coating showed high hardness and good wear resistance, which was probably attributed to its smooth surface and dense microstructure. The wear mechanism of the CrN coating was a combination of abrasion and oxidation. However, the coating flaked off at high normal load due to the deficient adhesion strength of the coating to the substrate.

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