scholarly journals Effect of Silicon Concentration on the Properties of Al-Cr-Si-N Coatings Deposited Using Cathodic Arc Evaporation

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4717
Author(s):  
Bogdan Warcholinski ◽  
Adam Gilewicz ◽  
Piotr Myslinski ◽  
Ewa Dobruchowska ◽  
Dawid Murzynski ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Protective Coatings ◽  
High Hardness ◽  
Silicon Concentration ◽  
Market Requirements ◽  
Order Of Magnitude ◽  
Cathodic Arc Evaporation ◽  
Machine Parts ◽  
Arc Evaporation ◽  
Cathodic Arc

The current market requirements are related to the introduction of new protective coatings for tools and machine parts with much better performance properties. These requirements are met by the AlCrSiN coatings; however, knowledge on the adhesion of these coatings to the substrate, as well as on their corrosion resistance, is deficient. The article presents the results of technological works on the coating deposition from AlCrSi cathodes with a silicon concentration from 0 at% to 10 at% by the cathodic arc evaporation and the results of systematic studies of their structure, mechanical, tribological and electrochemical properties. A correlation between the above-mentioned properties and the silicon concentration in the AlCrSiN coatings has been found and discussed. The coatings formed from cathodes containing less than 5 at% Si crystallize in the cubic structure. The size of the crystallites decreases with the silicon concentration increase. The coatings are characterized by a high hardness with a maximum of about 37 GPa (2 at% Si). The adhesion of the coatings is almost independent of the concentration of silicon. The wear rate is about one order of magnitude higher for coatings deposited from cathodes with a silicon concentration of 5 at% and 10 at% compared to a coating with a lower silicon concentration. This finding is consistent with the results of corrosion resistance studies. The coating deposited from the cathode with 10 at% of silicon exhibits the best anticorrosion properties against the salt solution.

scholarly journals Structure and Properties of Protective Coatings Deposited by Pulsed Cathodic Arc Evaporation in Ar, N2, and C2H4 Environments using the TiC–NiCr–Eu2O3 Cathode

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 230 ◽  
Author(s):  
Philipp Kiryukhantsev-Korneev ◽  
Alina Sytchenko ◽  
Alexander Sheveyko ◽  
Stepan Vorotilo
Keyword(s):  
Corrosion Resistance ◽  
Friction Coefficient ◽  
Protective Coatings ◽  
Elastic Recovery ◽  
Optical Emission ◽  
Corrosion Current ◽  
Powder Metallurgy Method ◽  
Cathodic Arc Evaporation ◽  
Arc Evaporation ◽  
Cathodic Arc

Coatings were deposited by pulsed cathodic arc evaporation (PCAE) of a TiC–NiCr–Eu2O3 cathode fabricated by the powder metallurgy method. The deposition was carried out in different gas media, including Ar, N2, and C2H4. The structure, elemental, and phase compositions of coatings were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), Raman spectroscopy, and glow discharge optical emission spectroscopy (GDOES). Coatings were tested in terms of their hardness, elastic modulus, elastic recovery, friction coefficient, and wear and corrosion resistance. The obtained results demonstrated that the coatings deposited in Ar possessed higher hardness up to 20 GPa and an elastic recovery of 92%. Coatings produced using С2H4 showed the minimum friction coefficient (0.35 ± 0.01). The use of nitrogen as a gas medium led to the formation of coatings with the best corrosion resistance in sulfuric acid. Coatings formed in N2 had a free corrosion potential of +0.28 V and a corrosion current density of 0.012 µA/cm2.

scholarly journals STRUCTURE AND PROPERTIES OF FeCr, CrAl AND FeCrAl COATINGS DEPOSITED BY CATHODIC ARC EVAPORATION

2021 ◽  
pp. 119-128
Author(s):  
R.L. Vasilenko ◽  
V.N. Voyevodin ◽  
V.А. Belous ◽  
М.A. Bortnitskaya ◽  
І.V. Kolodiy ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Protective Coatings ◽  
Physical And Mechanical Properties ◽  
Optimal Combination ◽  
Structure And Properties ◽  
Resistance To Oxidation ◽  
Cathodic Arc Evaporation ◽  
Oxidation In Air ◽  
Arc Evaporation ◽  
Cathodic Arc

Protective coatings with different compositions of Fe, Cr, and Al were deposited by cathodic arc evaporation method on fragments of Zr1Nb alloy fuel claddings. The influence of the composition and structural state of the developed coatings on their physical and mechanical properties (microhardness, resistance to corrosion and cavitation and abrasive wear) has been studied. It is shown that the optimal combination of mechanical properties and high resistance to oxidation from a series of studied coatings FeCr, FeCrAl, and CrAl have coatings of the FeCrAl system with a concentration of Cr ~ 22 at.% and Al ~ 14.3 at.%. It was found that protective coatings such as FeCr, FeCrAl, and CrAl with a thickness of ~ 12 μm significantly increase the resistance to oxidation and prevent the destruction of fuel claddings under oxidation in air at a temperature of 1150 °C for 1 h.

Study on Characteristics of ADI Coated DLC/ TiN /TiAlN Coatings by Cathodic Arc Evaporation

2006 ◽  
Vol 118 ◽  
pp. 257-264 ◽  
Author(s):  
Cheng Hsun Hsu ◽  
Jung Kai Lu ◽  
Ming Li Chen
Keyword(s):  
Surface Roughness ◽  
Corrosion Resistance ◽  
Surface Modification ◽  
Substrate Surface ◽  
Surface Hardness ◽  
High Carbon ◽  
Cathodic Arc Evaporation ◽  
Nodular Graphite ◽  
Arc Evaporation ◽  
Cathodic Arc

In this study, austempered ductile iron (ADI) substrate containing acicular ferrite and high-carbon austenite in the microstructure is made by austempering treatment at 360. Cathodic arc evaporation (CAE) coating technique was used to coat DLC, TiN and TiAlN films on ADI for surface modification. The results showed that the three coatings could be successfully coated onto ADI through CAE process without altering the unique microstructure of ADI. The structures of the coatings were identified by XRD, Raman and TEM, respectively. After HRC indentation testing, it was found that nodular graphite was the initial site of cracking for the coatings and then peeled. Surface roughness of all coated specimens was increased because the droplets generated on the substrate surface during the CAE process. Coated ADI had better wearability performance than uncoated ADI due to higher surface hardness. Coated specimens exhibited higher corrosion resistance than uncoated ones when they were immersed in separate solutions of both 3.5 wt. % NaCl and 10 vol. % HCl. In particular, TiAlN had the best corrosion resistance among the coated specimens.

scholarly journals DEUTERIUM TRAPPING AND SPUTTERING OF TUNGSTEN COATINGS EXPOSED TO LOW-ENERGY DEUTERIUM PLASMA

2020 ◽  
pp. 54-59
Author(s):  
G.D. Tolstolutskaya ◽  
A.S. Kuprin ◽  
A.V. Nikitin ◽  
I.E. Kopanets ◽  
V.N. Voyevodin ◽  
...  
Keyword(s):  
Room Temperature ◽  
Low Energy ◽  
Deuterium Plasma ◽  
Martensitic Steels ◽  
Order Of Magnitude ◽  
Cathodic Arc Evaporation ◽  
Deuterium Retention ◽  
Sputtering Yields ◽  
Arc Evaporation ◽  
Cathodic Arc

Processes of sputtering, surface modification and deuterium retention of tungsten coatings were studied under the influence of low-energy (500 eV) deuterium plasma with fluence (21024 D+/m2) at room temperature. The method of cathodic arc evaporation was used to deposit W and WN-coatings on stainless steel. Results of erosion studies indicated that the sputtering yields for coatings WN and W are 3.110-3 and 4.810-3 at./ion, respectively, and at least two times larger compared to bulk W but almost an order of magnitude smaller compared to ferritic martensitic steels. The total D retentions of W coatings were on the order of 51019 D/m2 and around one orders of magnitude lower than that of WN.

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