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 ◽  
...  

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.

Vacuum ◽  
2018 ◽  
Vol 156 ◽  
pp. 97-107 ◽  
Author(s):  
B. Warcholinski ◽  
A. Gilewicz ◽  
A.S. Kuprin ◽  
G.N. Tolmachova ◽  
V.D. Ovcharenko ◽  
...  

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4717
Author(s):  
Bogdan Warcholinski ◽  
Adam Gilewicz ◽  
Piotr Myslinski ◽  
Ewa Dobruchowska ◽  
Dawid Murzynski ◽  
...  

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.


Mechanik ◽  
2016 ◽  
pp. 538-539
Author(s):  
Adam Gilewicz ◽  
Bogdan Goluch ◽  
Zbigniew Kukliński ◽  
Bogdan Warcholiński

2006 ◽  
Vol 118 ◽  
pp. 323-327 ◽  
Author(s):  
Yin Yu Chang ◽  
Da Yung Wang ◽  
Chi Yung Hung

TiAlN, and TiAlN/CrN nanolayered coatings were synthesized by cathodic-arc evaporation with plasma enhanced duct equipment. Chromium and TiAl (50/50 at %) alloy cathodes were used for the deposition of TiAlN/CrN coatings. The effects of bilayer thickness and chromium content on the microstructure and mechanical properties of TiAlN/CrN nanolayered coatings were studied. The preferred orientation was changed from (200) in TiAlN monolayered coatings to (111) plane in the multilayered TiAlN/CrN coatings. The multilayered TiAlN/CrN coating with periodic thickness of 20 nm and the smallest crystallite size of 28 nm exhibited the highest hardness of 39 GPa. The multilayered TiAlN/CrN coatings also showed the best adhesion strength using scratch tests. It has been found that the structural and mechanical properties of the films were correlated with the addition of chromium and nanolayer thickness.


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