scholarly journals STRUCTURE AND PROPERTIES OF COATINGS BASED ON FeCrAl AND Cr18Ni10T

2020 ◽  
pp. 125-131
Author(s):  
V.А. Belous ◽  
М.A. Bortnitskaya ◽  
R.L. Vasilenko ◽  
V.N. Voyevodin ◽  
І.О. Klimenko ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Protective Coatings ◽  
Vacuum Arc ◽  
Properties Of Coatings ◽  
Corrosion Properties ◽  
Composition Optimization ◽  
Vacuum Arc Deposition ◽  
Mechanical And Corrosion Properties ◽  
Reaction Atmosphere ◽  
Mechanical Properties And Corrosion

The process of vacuum-arc deposition of protective coatings from multicomponent FeCrAl cathodes and 18Cr10NiT stainless steel onto fragments of Zr1Nb alloy claddings has been developed. The influence of the reaction atmosphere (vacuum, nitrogen, oxygen) during the deposition of coatings on their structure, mechanical and corrosion properties is investigated. Coatings deposited in vacuum from the Cr18Ni10T cathode have the best set of mechanical properties and corrosion resistance; whereas coatings based on FeCrAl require composition optimization. It has been established that coatings deposited from FeCrAl and stainless steel cathodes with a thickness of 20 μm significantly increase oxidation resistance and prevent the destruction of fuel cladding under exposure to air at 1150 °C for 1 h.

STRUCTURE AND PROPERTIES OF MULTI COMPONENT (Ti-Zr-Cr-Nb)N COATINGS OBTAINED BY VACUUM-ARC DEPOSITION

Tribologia ◽  
2016 ◽  
Vol 270 (6) ◽  
pp. 205-218
Author(s):  
Didar K. YESKERMESSOV ◽  
Sergey V. PLOTNIKOV ◽  
Nazgul K. YERDYBAEVA
Keyword(s):  
Mechanical Properties ◽  
Protective Coatings ◽  
Cutting Tools ◽  
Experimental Studies ◽  
Scratch Test ◽  
Vacuum Arc ◽  
Properties Of Coatings ◽  
Microstructure And Mechanical Properties ◽  
Vacuum Arc Deposition ◽  
Arc Deposition

Investigated multicomponent coating nitride (Ti-Zr-Cr-Nb)N in this study were obtained using a well-developed technique of vacuum-arc deposition. Theoretical and experimental studies show that the chemical composition, microstructure, and mechanical properties of coatings are based closely on deposition parameters (the working gas pressure and bias potential on the substrate). The microstructure and mechanical properties (Ti-Zr-Cr-Nb)N coatings were investigated using a scanning electron microscope (SEM) equipped with energy dispersive microanalysis prefix and X-ray diffraction (XRD). Phase analysis of nitride coatings (Zr-Ti-Cr-Nb)N indicates a TiN phase, NbTiN2, ZrTiNb, ZrNb, TiCr and α-Ti. The coatings thickness reached 6.8 μm and their maximum of hardness was H = 43,7GPa. Tribological (test “ball-on-disc”) and mechanical (scratch test) properties of multi-coating were studied. The experimental results obtained by studying multicomponent coatings (Ti-Zr-Cr-Nb)N are promising and can be used as protective coatings for cutting tools and structural materials.

Mechanical and Corrosion Properties of VT6 Titanium Alloy after Irradiation with Helium and Aluminum Lons

2021 ◽  
Vol 887 ◽  
pp. 229-234
Author(s):  
Viktor V. Ovchinnikov ◽  
Svetlana V. Yakutina ◽  
Nadezhda V. Uchevatkina
Keyword(s):  
Titanium Alloy ◽  
Ion Irradiation ◽  
Structural Phase ◽  
High Dose ◽  
Corrosion Properties ◽  
Average Grain Size ◽  
Aluminum Implantation ◽  
Modified Surface ◽  
Mechanical And Corrosion Properties ◽  
Mechanical Properties And Corrosion

The effect of high-dose aluminum implantation on the structural-phase state of the surface layer of titanium alloy VT6 with a fine structure (average grain size 2.3 μm) on the mechanical and corrosion properties has been investigated. It is shown that, as a result of ion irradiation, polyphase implanted layers based on α-titanium grains are formed, containing an intermetallic Ti3Al phase along the grain boundaries of α-titanium. The modified surface layers are characterized by improved mechanical properties and corrosion resistance. The noted effect is enhanced by the use of preliminary helium implantation with a dose of 1.3 × 1017 ion / cm2.

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