The Properties of Binary and Ternary Ti Based Coatings Produced by Thermionic Vacuum Arc (TVA) Technology

Mandes, Aurelia; Vladoiu, R.; Prodan, G.; Dinca, Virginia; Poroşnicu, C.; Dincă, P.

doi:10.3390/coatings8030114

Cited by 14 publications

(3 citation statements)

References 37 publications

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“…Ternary coatings (TiNbC) exhibited the best corrosion and tribocorrosive performance along with low stress and high hardness compared to those of both binary coatings. This finding was accepted because ternary coatings have been found to be superior to binary ones [52]. The good corrosion resistance of TiNbC can be attributed to low crystalline size and the long paths over the grain boundaries delaying electrolyte penetration.…”

Section: Discussionmentioning

confidence: 95%

In Vitro Corrosion and Tribocorrosion Performance of Biocompatible Carbide Coatings

et al. 2020

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The present study aims to explain the corrosion and the tribocorrosion performance in simulated conditions of the human body by the level of stress, adhesion of coating to substrate, roughness, and hardness. The coatings were synthesized by the cathodic arc evaporation method on 316L stainless steel substrates to be used for load bearing implants. Structure, elemental, and phase compositions were studied by means of energy dispersive spectrometry and X-ray diffraction, respectively. The grain size and strain of the coatings were determined by the Williamson–Hall plot method. Tests on hardness, adhesion, roughness, and electrochemical behavior in 0.9% NaCl solution at 37 ± 0.5 °C were carried out. Tribocorrosion performances, evaluated by measuring the friction coefficient and wear rate, were conducted in 0.9% NaCl solution using the pin on disc method at 37 ± 0.5 °C. TiC and ZrC exhibited a (111) preferred orientation, while TiNbC had a (200) orientation and the smallest crystallite size (8.1 nm). TiC was rougher than ZrC and TiNbC; the lowest roughness was found for TiNbC coatings. The highest hardness and adhesion values were found for TiNbC, followed by TiC and the ZrC. All coatings improved the corrosion resistance of 316L steels, but TiNbC showed the best corrosion behavior. TiNbC had the lowest friction coefficient (1.6) and wear rate (0.99 × 10−5 mm3·N−1∙m−1) values, indicating the best tribocorrosive performance in 0.9% NaCl at 37 ± 0.5 °C.

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Section: Discussionmentioning

confidence: 95%

In Vitro Corrosion and Tribocorrosion Performance of Biocompatible Carbide Coatings

et al. 2020

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“…The cathode acts as an electron gun heated by the intensity current of the filament and the anode is a carbon crucible, filled with a mixture of Co granules (99.95% metal basis), Ni granules (99.996%, metal basis), and aluminum granules (99.999%, metal basis) in a weight ratio of 1:1:1. The experimental setup for binary/ternary mixtures has been described elsewhere [ 32 , 33 , 34 ]. After ignition of the plasma, the power applied on the arc discharge was P = 375 W, where P = U a ·I a ; the symbols U a and I a represent the arc voltage and the arc current during deposition, respectively.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of Cobalt–Nickel Aluminate Spinels Using the Laser-Induced Thermionic Vacuum Arc Method and Thermal Annealing Processes

et al. 2022

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To obtain highly homogeneous cobalt–nickel aluminate spinels with small crystallite sizes, CoNiAl alloy thin films were primarily deposited using Laser-induced Thermionic Vacuum Arc (LTVA) as a versatile method for performing processing of multiple materials, such as alloy/composite thin films, at a nanometric scale. Following thermal annealing in air, the CoNiAl metallic thin films were transformed into ceramic oxidic (Co,Ni)Al2O4 with controlled composition and crystallinity suitable for thermal stability and chemical resistance devices. Structural analysis revealed the formation of (Co,Ni)Al2O4 from the amorphous CoNiAl alloys. The mean crystallite size of the spinels was around 15 nm. Thermal annealing induces a densification process, increasing the film thickness together with the migration process of the aluminum toward the surface of the samples. The sheet resistance changed drastically from 200–240 Ω/sq to more than 106 Ω/sq, revealing a step-by-step conversion of the metallic character of the thin film to a dielectric oxidic structure. These cermet materials can be used as inert anodes for the solid oxide fuel cells (SOFCs), which require not only high stability with respect to oxidizing gases such as oxygen, but also good electrical conductivity. These combination metal–ceramics are known as bi-layer anodes. By controlling the crystallite size and the interplay between the oxide/metal composite, a balance between stability and electrical conductivity can be achieved.

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“…Other researchers developed black coatings of nickel on stainless steel substrate for solar thermal cells 6 . A previous study showed that when an element is "mixed" with other metals, advanced materials with amazing properties could be revealed and, from the economic point of view, the price of nal products would be decreased, which might be of particular advantage for industrial applications 7 . Consequently, researchers showed that when Ni mixed with Co at speci c percentage, the corrosion resistance and solar absorbance can be enhanced 8 9 .…”

Section: Introductionmentioning

confidence: 99%

Incorporation of ZnO into CrNi coatings for enhanced solar absorption and corrosion protection for renewable energy development

Soliman,

Rayan,

Hamdy

2024

Preprint

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The search for costs reduction for renewable energies through parameters optimization is among the priorities in manufacturing technology. In solar collectors, high absorption in low emittance represents the main performance parameter during the characterization of the absorber films. This article provides in-depth study for the co-deposition of Cr and Ni doped by ZnO coatings and their influence on the surface protection correlating it with the absorption of the produced surfaces. Electrodeposition technique was used for the synthesis of selective surfaces based on black chrome absorber films on cupper substrate. Corrosion testing was performed in 3.5Wt % NaCl aqueous solution using electrochemical impedance spectroscopy (EIS) and polarization tests. Results showed that Cr+Ni+ZnO composite film on Cu exhibited a significant improvement over traditional Cr film, such as surface smoothness, corrosion resistance, bending resistance and high solar absorption.

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The Properties of Binary and Ternary Ti Based Coatings Produced by Thermionic Vacuum Arc (TVA) Technology

Cited by 14 publications

References 37 publications

In Vitro Corrosion and Tribocorrosion Performance of Biocompatible Carbide Coatings

In Vitro Corrosion and Tribocorrosion Performance of Biocompatible Carbide Coatings

Synthesis of Cobalt–Nickel Aluminate Spinels Using the Laser-Induced Thermionic Vacuum Arc Method and Thermal Annealing Processes

Incorporation of ZnO into CrNi coatings for enhanced solar absorption and corrosion protection for renewable energy development

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