Evaluation of corrosion, mechanical and structural properties of new Ni–W–PCTFE nanocomposite coating

Hosseini, Mir Ghasem; Teymourinia, Hakimeh; Farzaneh, Amir; Khamenehasl, S H

doi:10.1016/j.surfcoat.2016.04.060

Cited by 25 publications

(11 citation statements)

References 19 publications

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“…This is because these metals cannot be directly co-deposited in cationic form from aqueous solutions. Therefore, these metals are introduced in the form of powders during the co-deposition process [ 15 , 16 , 17 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

The Use of ZrO2 Waste for the Electrolytic Production of Composite Ni–P–ZrO2 Powder

et al. 2021

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Ni–P–ZrO2 composite powder was obtained from a galvanic nickel bath with ZrO2 powder. Production was conducted under galvanostatic conditions. The Ni–P–ZrO2 composite powder was characterized by the presence of ZrO2 particles covered with electrolytical nanocrystalline Ni–P coating. The chemical composition (XRF method), phase structure (XRD method) and morphology (SEM) of Ni–P–ZrO2 and the distribution of elements in the powder were all investigated. Based on the analyses, it was found that the obtained powder contained about 50 weight % Zr and 40 weight % Ni. Phase structure analysis showed that the basic crystalline component of the tested powder is a mixed oxide of zirconium and yttrium Zr0.92Y0.08O1.96. In addition, the sample contains very large amounts of amorphous compounds (Ni–P). The mechanism to produce the composite powder particles is explained on the basis of Ni2+ ions adsorption process on the metal oxide particles. Current flow through the cell forces the movement of particles in the bath. Oxide grains with adsorbed nickel ions were transported to the cathode surface. Ni2+ ions were discharged. The oxide particles were covered with a Ni–P layer and the heavy composite grains of Ni–P–ZrO2 flowed down to the bottom of the cell.

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Section: Introductionmentioning

confidence: 99%

The Use of ZrO2 Waste for the Electrolytic Production of Composite Ni–P–ZrO2 Powder

et al. 2021

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“…Corrosion and wear performance have also been improved by the use of NiTi coating modified with ZrO 2 coatings on AISI 316 SS [22] by using a cold spray technology (a coating process in which a metal substrate is exposed to small particles (1 to 50 µm), which are accelerated by the supersonic flow of compressed gas at a high speed (300-1200 m/s)). The process is based on a combination of particle temperature, speed and size to allow spraying at the lowest possible temperature to: coat the cobalt chromium (Co-Cr) alloy L605 powders in order to improve the corrosion resistance and the strength of 316L SS [23]; Pd-Ni/Pd-Cu double coating on the 316SS surface by electroplating [24]; nanocomposite coatings of polychlorotrifluoroethylene (PCTFE) particles with nickel-tungsten (Ni-W) coatings through the electro deposition procedure [25]; polymerized vinyltrimethoxysilane (PVTMS) coating with henna's aqueous solution forming a PVTMS/henna hybrid sol-gel for biomedical applications [26]; polyaniline-graphene nanocomposite coatings electrodeposited on 310 SS by cyclic voltammetry technique [27]; and synthesis of polyaniline-montmorrilonite nanocomposite coatings deposited on 316L SS by electrodeposition [28,29].…”

Section: Introductionmentioning

confidence: 99%

Characterization of PTFE Film on 316L Stainless Steel Deposited through Spin Coating and Its Anticorrosion Performance in Multi Acidic Mediums

et al. 2020

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Polytetrafluoroethylene (PTFE) was coated on 316L stainless steel (SS) substrate through a spin coating technique to enhance its corrosion resistance properties in hydrochloric acid (HCl) and nitric acid (HNO3) medium. Scanning electron microscopy (SEM) revealed the morphology of the coated and uncoated substrates and showed a uniform and crack-free PTFE coating on 316L SS substrate, while a damaged surface with thick corrosive layers was observed after the electrochemical test on the uncoated sample. However, an increased concentration of HCl and HNO3 slightly affected the surface morphology by covering the corrosive pits. An atomic force microscope (AFM) showed that the average surface roughness on 316L SS and PTFE coating was 26.3 nm and 24.1 nm, respectively. Energy dispersive X-ray spectroscopy (EDS) was used for the compositional analysis, which confirmed the presence of PTFE coating. The micro Vickers hardness test was used to estimate the hardness of 316L SS and PTFE-coated substrate, while the scratch test was used to study the adhesion properties of PTFE coating on 316L SS. The anticorrosion measurements of 316L SS and PTFE-coated substrates were made in various HCl and HNO3 solutions by using the electrochemical corrosion test. A comparison of the corrosion performance of PTFE-coated substrate with that of bare 316L SS substrate in HCl medium showed a protection efficiency (PE) of 96.7%, and in the case of HNO3 medium, the PE was 99.02%, by slightly shifting the corrosion potential of the coated sample towards the anodic direction.

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“…The reason for the change of lattice will be discussed afterward. The (200) plane crystal grain size of the composite coatings that contain various concentrations of TiO 2 is calculated according to Scherrer's equation as follows [24].…”

Section: Characterization Of the Composite Coatingsmentioning

confidence: 99%

Electrodeposition of a Pd-Ni/TiO2 Composite Coating on 316L SS and Its Corrosion Behavior in Hot Sulfuric Acid Solution

et al. 2018

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Pd-Ni/TiO 2 composite coatings were elaborated on 316L stainless steel by an electrodeposition method. The specimens were obtained from an electrolytic bath that contained various contents (5, 10, and 15 g L −1) of nanosized TiO 2 particles. X-ray diffraction (XRD) characterization showed that increasing the TiO 2 content in the coatings can decrease the crystal grain size. The surface morphology and chemical composition of the composite coatings were modified by the addition of TiO 2 particles in the electrolyte, as shown by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) methods, respectively. The TiO 2 content also significantly affected the mechanical and electrochemical properties of the Pd-Ni/TiO 2 composite coatings. The microhardness of the Pd-Ni/TiO 2 composite coatings can be enhanced by increasing the TiO 2 content in the coatings. With the addition of 5 g L −1 TiO 2 particles to the electrolyte, the deposited Pd-Ni/TiO 2 composite coating presented a remarkably increased corrosion resistance when exposed to a sulfuric acid solution at 60 • C compared with that of the Pd-Ni alloy coating. Nevertheless, the further addition of TiO 2 particles into the electrolytic bath did not further improve the corrosion resistance of the composite coating.

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Evaluation of corrosion, mechanical and structural properties of new Ni–W–PCTFE nanocomposite coating

Cited by 25 publications

References 19 publications

The Use of ZrO2 Waste for the Electrolytic Production of Composite Ni–P–ZrO2 Powder

The Use of ZrO2 Waste for the Electrolytic Production of Composite Ni–P–ZrO2 Powder

Characterization of PTFE Film on 316L Stainless Steel Deposited through Spin Coating and Its Anticorrosion Performance in Multi Acidic Mediums

Electrodeposition of a Pd-Ni/TiO2 Composite Coating on 316L SS and Its Corrosion Behavior in Hot Sulfuric Acid Solution

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