A study on comparing surface characterization and electrochemical properties of single-layer CrN coating with nanostructured multilayer ZrN/CrN coating in 3.5 wt.% NaCl solution

Samim, Parviz Mohamadian; Fattah‐alhosseini, Arash; Elmkhah, Hassan; Imantalab, Omid; Nouri, Meisam

doi:10.1016/j.surfin.2020.100721

Cited by 29 publications

(7 citation statements)

References 52 publications

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“…The electrochemical tests (PDP and EIS measurements) were performed under an aerated condition in a three‐electrode flat cell containing a Pt counter electrode, an Ag/AgCl reference electrode, and the studied samples as working electrodes. To perform the EIS tests, the samples were exposed to NaCl solution for 1 and 24 h. A detailed description of the electrochemical tests can be found in our previous publications, 16 17 . The ball‐on‐disc tribological tests were carried out with a 52100 steel ball 6 mm diameter and a hardness of about 63 Hardness Rockwell‐C using a force of 5 N and a sliding distance of 500 m. In this study, all tests were performed in an ambient atmosphere at a temperature of 30°C, a humidity of 40 %, and a linear speed of .08 m/s under unlubricated conditions.…”

Section: Methodsmentioning

confidence: 99%

The effect of substrate surface integrity on the surface properties of TiCrN coating applied via the CAE‐PVD method

Elmkhah

Mohammadi

Molaei

et al. 2022

Int J Applied Ceramic Tech

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This study aims to investigate how the predeposition machining processes such as magnetic grinding, turning machining, and wire electrical discharge machining can influence the surface properties including electrochemical and tribological behavior of TiCrN nanostructured coating applied on Mo40 steel substrate. A physical vapor deposition technique using cathodic arc evaporation was used to apply the coating. The crystallographic phases and the microstructure of the coating were studied by X-ray diffraction and scanning electron microscope, respectively. Rockwell-C, electrochemical impedance spectroscopy and potentiodynamic polarization, and pin-on-disk wear tests were employed to evaluate the adhesion strength, corrosion behavior, and tribological property of specimens, respectively. The electrochemical results after 24 h of exposure to 3.5 wt% NaCl solution showed that TiCrN coating pretreated with a turning process with polarization resistance of about 3525.32 Ω.cm 2 had the best corrosion resistance among all specimens. This was because of the improvement of the smoothness, surface quality, and adhesion after the turning process. On the other, the friction coefficient of the grounded sample is less than that of other ones. This is probably due to its higher adhesion strength and higher surface smoothness.

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Section: Methodsmentioning

confidence: 99%

The effect of substrate surface integrity on the surface properties of TiCrN coating applied via the CAE‐PVD method

Elmkhah

Mohammadi

Molaei

et al. 2022

Int J Applied Ceramic Tech

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“…1,2 Nitride coatings, such as CrAlN, TiAlN, and TiN as the most popular hard coatings, have a high hardness and wear resistance, 3 good oxidation resistance, 4 low friction coefficient, 5 and high chemical resistance. 6,7 Physical vapor deposition methods are commonly used to apply these coatings. In this regard, cathodic arc evaporation with a high ionization degree, high deposition rate, low deposition temperature, and upscaling capability has a unique stand.…”

Section: Introductionmentioning

confidence: 99%

“…Nitride coatings, such as CrAlN, TiAlN, and TiN as the most popular hard coatings, have a high hardness and wear resistance, 3 good oxidation resistance, 4 low friction coefficient, 5 and high chemical resistance 6,7 . Physical vapor deposition methods are commonly used to apply these coatings.…”

Section: Introductionmentioning

confidence: 99%

The effect of Ti and Si on the mechanical and electrochemical behaviors of the AlCrN coating deposited by CAPVD on 304SS

Meghdari¹,

Rahmanifard

Elmkhah

2023

Int J Applied Ceramic Tech

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This study aimed to investigate the effect of adding titanium (Ti) and silicon (Si) elements on the mechanical and electrochemical properties of the AlCrNbased coating. For this purpose, a cathodic arc physical vapor deposition machine was used. Scanning electron microscopy, X-ray diffraction, and nanoindentation tests were utilized for morphological, microstructural, and mechanical characterization of the coatings. The hardness value and plastic deformation index of CrAlN-based coating increase with the presence of Si element. The mechanical properties improvement is attributed to the reduction of crystallite size as well as to the tendency of the coating structure to become amorphous. The specimens were subjected to 3.5 wt% NaCl solution to electrochemical impedance corrosion and potentiodynamic polarization tests. The results showed that by increasing the coatings' titanium content, the coatings' corrosion resistance improved. Moreover, by adding 3% and 5% of Si elements to the coatings' composition, the corrosion resistance of the AlCrTiSiN coatings was enhanced by 35% and 78%, respectively. Improving the corrosion resistance of the AlCrN-based coatings by adding the Si element is attributed to the change in the microstructure and reduction in the porosity of the coatings.

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“…In recent years, some progress has been made in improving the small-angle solid particle erosion properties of ZrN coatings prepared by ion-assisted deposition technology [14][15][16]. However, there are few studies on the solid-liquid two-phase erosion-corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Erosion-Corrosion Behavior of AISI 420 Stainless Steel by Ion-Assisted Deposition ZrN Coatings

Wan

Hou

et al. 2021

Metals

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In this paper, a pragmatic technique has been developed to evaluate the erosion-corrosion behavior of three kinds of ZrN coatings (i.e., monolayer, multilayer, and gradient layers) which were deposited on AISI 420 martensitic stainless steel using an ion-assisted deposition technology. Among them, the monolayer coating refers to the coating with no change in composition and structure, the multilayer coating refers to the coating with alternating change of Zr/ZrN, and the gradient coating refers to the ZrN coating by increasing N2 partial pressure gradually. The morphology, composition, and microhardness of these ZrN coatings were examined by means of integrating the scanning electron microscopy (SEM), X-ray diffraction (XRD), and Knoop hardness measurements, while anodic polarization tests and salt fog spray tests in a simulated industrial environment have been performed to evaluate and identify the corrosion mechanisms of these coatings. The surface microhardness and corrosion resistance of the AISI420 martensitic stainless steel is found to be significantly improved by depositing the ion-assisted deposition ZrN coatings. The study indicates that the erosion-corrosion behavior in the slurry is the result of the synergistic effect of small-angle erosion and acid solution corrosion. Three ZrN coatings hinder the slurry erosion-corrosion behavior from two aspects (i.e., erosion resistance of small-angle particles as well as corrosion resistance of the substrate), thereby significantly improving the erosion-corrosion resistance of AISI 420 stainless steel. In addition, the ZrN gradient coatings show a much better erosion-corrosion resistance than that of the monolayer/multilayer ZrN coating because they have excellent crack resistance, bearing capacity, and electrochemical performance.

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A study on comparing surface characterization and electrochemical properties of single-layer CrN coating with nanostructured multilayer ZrN/CrN coating in 3.5 wt.% NaCl solution

Cited by 29 publications

References 52 publications

The effect of substrate surface integrity on the surface properties of TiCrN coating applied via the CAE‐PVD method

The effect of substrate surface integrity on the surface properties of TiCrN coating applied via the CAE‐PVD method

The effect of Ti and Si on the mechanical and electrochemical behaviors of the AlCrN coating deposited by CAPVD on 304SS

Improvement of Erosion-Corrosion Behavior of AISI 420 Stainless Steel by Ion-Assisted Deposition ZrN Coatings

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