Influence of the nitrogen content on the corrosion resistances of multicomponent AlCrNbYZrN coatings

Srinath, Aishwarya; Fieandt, Kristina von; Lindblad, Rebecka; Fritze, Stefan; Korvela, Markus; Petersson, Jean; Lewin, Erik; Nyholm, Leif

doi:10.1016/j.corsci.2021.109557

Cited by 11 publications

(11 citation statements)

References 41 publications

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“…The corrosion resistance of Ti–STN, Ti–Sn, Ti–Ti, Ti–Nb, and Ti foil was first evaluated by linear sweep voltammetry measurement in a 0.1 M HClO 4 electrolyte to simulate the acidic operation environments. As shown in Figure a, the potentiodynamic polarization curves of all samples displayed the typical characteristics of anodic passivation, − and it was found that the corrosion potentials ( E corr ) of these Ti-based substrates followed the trend of Ti–STN > Ti–Nb > Ti–Ti > Ti–Sn > Ti foil, which is consistent with the result of corrosion current density ( j corr ). The Ti–STN substrate had the highest E corr of 471 mV (vs reversible hydrogen electrode, RHE), which was 584 mV higher than Ti foil, 215 mV higher than Ti–Sn, 202 mV higher than Ti–Ti, and 155 mV higher than Ti–Nb; meanwhile, the j corr of Ti–STN (3.32 × 10 –3 μA cm –2 ) was 1 or 2 orders of magnitude lower than those of Ti–Nb, Ti–Ti, Ti–Sn, and Ti (Table ), which demonstrated that the STN interlayer had the best block effect for anodic corrosion. − In addition, the protective efficiency ( P i ), a parameter to reflect the protective ability of the coatings against corrosion, was also calculated .…”

Section: Resultssupporting

confidence: 75%

High Corrosion Resistance of a Ti-Based Anode with Sn/Ti/Nb Ternary Metal Oxide Interlayers

Wei

Liu

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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Ti-based anodes are widely applied in water splitting, the chlor-alkali industry, hydrometallurgy, and organic compound electrochemical synthesis. However, the thickening passivation layer in Ti substrates in acidic electrolytes accelerates the deactivation of whole Ti-based anodes. In order to block the attack from the reactive oxygen species, a compact interlayer containing ternary metal oxides (SnO2, TiO2, and Nb2O5, STN) on Ti foil (denoted as Ti–STN) was prepared via a facile thermal-decomposition method. The SnO2, TiO2, and Nb2O5 components impose the mutual restriction of grain growth during the pyrolytic synthetic progress, which promotes the grain refinement of STN interlayers. Due to the compact and stable STN interlayers, the Ti–STN substrate and the Ti–STN-derived active anodes presented an enhanced corrosion resistance and prolonged service lives. Hence, we believe that the Ti–STN substrate and the grain-refinement method to resist electrochemical corrosion in this work offer new approaches for the development of industrial electrolysis and electrochemical energy conversion devices.

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Section: Resultssupporting

confidence: 75%

High Corrosion Resistance of a Ti-Based Anode with Sn/Ti/Nb Ternary Metal Oxide Interlayers

Wei

Liu

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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“…According to our TEM and XRD data, the introduction of N into the ZrB 2 coatings resulted in the alteration of the microstructure of the coatings, namely the refinement of the grains size from 4-11 nm to 1-4 nm and an increase in the volume percentage of the amorphous phase. It is known that a dense and fine-grained microstructure of the coatings promotes the formation of stable passivated layers [66,67]. The differences in the corrosion resistance between coatings 1 and 2 can be attributed to the distinction in the conductivity of free boron and boron nitride [68,69].…”

Section: Resultsmentioning

confidence: 99%

Structure, Corrosion Resistance, Mechanical and Tribological Properties of ZrB2 and Zr-B-N Coatings

Kiryukhantsev-Korneev

Сытченко

Kaplanskii

et al. 2021

Metals

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The coatings ZrB2 and Zr-B-N were deposited by magnetron sputtering of ZrB2 target in Ar and Ar–15%N2 atmospheres. The structure and properties of the coatings were investigated via scanning and transmission electron microscopy, energy dispersion analysis, optical profilometry, glowing discharge optical emission spectroscopy and X-ray diffraction analysis. Mechanical and tribological properties of the coatings were investigated using nanoindentation, “pin-on-disc” tribological testing and “ball-on-plate” impact testing. Free corrosion potential and corrosion current density were measured by electrochemical testing in 1N H2SO4 and 3.5%NaCl solutions. The oxidation resistance of the coatings was investigated in the 600–800 °С temperature interval. The coatings deposited in Ar contained 4–11 nm grains of the h-ZrB2 phase along with free boron. Nitrogen-containing coatings consisted of finer crystals (1–4 nm) of h-ZrB2, separated by interlayers of amorphous a-BN. Both types of coatings featured hardness of 22–23 GPa; however, the introduction of nitrogen decreased the coating’s elastic modulus from 342 to 266 GPa and increased the elastic recovery from 62 to 72%, which enhanced the wear resistance of the coatings. N-doped coatings demonstrated a relatively low friction coefficient of 0.4 and a specific wear rate of ~1.3 × 10−6 mm3N−1m−1. Electrochemical investigations revealed that the introduction of nitrogen into the coatings resulted in the decrease of corrosion current density in 3.5% NaCl and 1N H2SO4 solution up to 3.5 and 5 times, correspondingly. The superior corrosion resistance of Zr-В-N coatings was related to the finer grains size and increased volume of the BN phase. The samples ZrB2 and Zr-B-N resisted oxidation at 600 °C. N-free coatings resisted oxidation (up to 800 °С) and the diffusion of metallic elements from the substrate better. In contrast, Zr-B-N coatings experienced total oxidation and formed loose oxide layers, which could be easily removed from the substrate.

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“…Due to the high mixing entropy, HENs containing transition group metals tend to form a single fcc (face‐centered‐cubic) solid solution structure 14 . Most studies of HEN thin films focus on the effect of deposition parameters on the structure and properties, such as nitrogen flow, substrate temperature, and bias voltage 15–18 . It has been reported that by increasing the nitrogen flow rate, the hardness of (Al 0.5 CrFeNiTi 0.25 )N x high‐entropy films increased due to solid solution strengthening effect 19 .…”

Section: Introductionmentioning

confidence: 99%

“…19 For the (AlCrN-bYZr)N coatings, the porosity is reduced by changing the nitrogen flow rate, thereby increasing the corrosion resistance. 16 Besides, research has shown that by increasing the substrate temperature from room temperature (RT) to 250 • C, the grain size of (TiVCrZrHf)N coatings decreased, and the grain boundary density increased, resulting in a significant increase in hardness by 36%. 15 Moreover, the corrosion resistance of (AlCrNbYZr)N films was improved due to the decreased surface roughness with increased substrate bias voltage and temperature.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous enhancement of hardness and wear and corrosion resistance of high‐entropy transition‐metal nitride

Yuan

Gao

et al. 2022

J Am Ceram Soc.

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Binary transition-metal nitrides (TMNs) are widely used as protective coating materials, and enhancing key performance characteristics are crucial to improving their robust and durable applications in harsh service environments.Compositional modulation via multiple elemental species offers an effective approach for optimizing physicochemical properties of TMNs, and establishing the composition-property relation is essential to the design of high-performance TMNs. In this work, we report on a comparative study of our synthesized NbN, NbMoN, and (NbMoTaW)N films and examined their microstructure, mechanical properties, and tribological and corrosion behaviors. The high-entropy (NbMoTaW)N film exhibits the highest hardness of 23.5 ± 1.35 GPa, which is ascribed to its high structural stability, increased elastic constant, and elastic modulus compared to the NbN and NbMoN films. The (NbMoTaW)N film also possesses the best wear resistance stemming from the highest H/E ratio and formation of self-lubricating MoO 3 and WO 3 species; moreover, this film shows the best corrosion resistance attributed to the sluggish diffusion of Cl − due to lattice contraction and the structural stability caused by high-entropy effect. This work demonstrates simultaneously enhanced hardness and wear and corrosion resistance in a high-entropy TMN, opening a pathway for developing a new generation of advanced protective coating materials.

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Influence of the nitrogen content on the corrosion resistances of multicomponent AlCrNbYZrN coatings

Cited by 11 publications

References 41 publications

High Corrosion Resistance of a Ti-Based Anode with Sn/Ti/Nb Ternary Metal Oxide Interlayers

High Corrosion Resistance of a Ti-Based Anode with Sn/Ti/Nb Ternary Metal Oxide Interlayers

Structure, Corrosion Resistance, Mechanical and Tribological Properties of ZrB2 and Zr-B-N Coatings

Simultaneous enhancement of hardness and wear and corrosion resistance of high‐entropy transition‐metal nitride

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