Immersion corrosion behavior, electrochemical performance and corrosion mechanism of subsonic flame sprayed FeCoCrMoSi amorphous coating in 3.5% NaCl solution

Weicheng, Kong; Li, Kangmei; Hu, Jun

doi:10.1016/j.ijhydene.2021.12.039

Cited by 20 publications

(23 citation statements)

References 40 publications

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“…In the corrosion process, the Fe90-Al 2 O 3 coating with the sparse and pore structure provided the diffusion channels for the Cl − (Zhang et al , 2021), and its corrosion current density presented the largest value, while the Fe90-Al 2 O 3 coating with the additions of Cr and Ta was the opposite. In this case, the oxygen-absorbing corrosions occurred on the neutral electrolyte (Xu et al , 2011; Kong et al , 2022) as follows: …”

Section: Analysis and Discussionmentioning

confidence: 99%

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution

Dejun

2022

ACMM

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Purpose This paper aims to investigate the effects of Cr and Ta additions on the friction performance and corrosion-wear mechanism of Fe90-Al2O3 coating in 3.5% NaCl solution. Design/methodology/approach Cr and Ta reinforced Fe90-Al2O3 coatings were prepared on Q235 steel by laser cladding. The effects of Cr and Ta addition on the coefficient of friction (COF) and wear rate of Fe90-Al2O3 coating were investigated using a friction tester, and the wear model was established to discuss its corrosion-wear mechanism. Findings The average COFs of Fe90-Al2O3, Fe90-Al2O3-10%Cr and Fe90-Al2O3-10%Ta coatings in 3.5% NaCl solution are 0.57, 0.42 and 0.75, respectively, and the corresponding wear rates are 9.42 × 10−7, 5.31 × 10−7 and 7.02 × 10−7 mm3 s−1 N−1, respectively. The corrosion-wear resistance of Fe90-Al2O3-10%Cr coating is the best among the three kinds of coatings, in which the additions of Cr and Ta play a role in solid solution strengthening. Originality/value The Fe90-Al2O3 coating was strengthened by the additions of Cr and Ta to improve its corrosion-wear resistance in 3.5% NaCl solution.

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Section: Analysis and Discussionmentioning

confidence: 99%

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution

Dejun

2022

ACMM

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“…The electron transfer of the obtained film was established by an electrochemical workstation, and the polarization curves of the three films and the electrode are shown in Figure 9a. The Tafel extrapolation method was used to obtain the polarization current [51,52], which was further calculated to obtain polarization resistance, and the related results are shown in Table 1. The relationship between reactive oxygen species and polarization current was obtained by a first-order derivative of the anode part, as shown in Figure 9b.…”

Section: Electrochemical Performance 351 Polarization Curve Analysismentioning

confidence: 99%

Superhydrophobic and Electrochemical Performance of CF2-Modified g-C3N4/Graphene Composite Film Deposited by PECVD

Li¹,

Lu²,

Zhang³

2022

Nanomaterials

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The physicochemical properties of functional graphene are regulated by compositing with other nano-carbon materials or modifying functional groups on the surface through plasma processes. The functional graphene films with g-C3N4 and F-doped groups were produced by controlling the deposition steps and plasma gases via radio frequency plasma-enhanced chemical vapor deposition (RF-PECVD). The first principles calculation and electrochemistry characteristic of the functional graphene films were performed on Materials Studio software and an electrochemical workstation, respectively. It is found that the nanostructures of functional graphene films with g-C3N4 and F-doped groups were significantly transformed. The introduction of fluorine atoms led to severe deformation of the g-C3N4 nanostructure, which created gaps in the electrostatic potential of the graphene surface and provided channels for electron transport. The surface of the roving fabric substrate covered by pure graphene is hydrophilic with a static contact angle of 79.4°, but the surface is transformed to a hydrophobic state for the g-C3N4/graphene film with an increased static contact angle of 131.3° which is further improved to 156.2° for CF2-modified g-C3N4/graphene film exhibiting the stable superhydrophobic property. The resistance of the electron movement of CF2-modified g-C3N4/graphene film was reduced by 2% and 76.7%, respectively, compared with graphene and g-C3N4/graphene.

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“…The polarization curve were divided into two branches: the cathode branch of hydrogen evolution reduction reaction and the anode branch of electrode oxidation reaction. [30,31] The current density increased as the potential increased, which was related to the dissolution of the electrode. Meanwhile, there were obvious stable passivation regions on the anode branches of Ni60-Al and Ni60-Al-Ti coatings, and the corrosion current density was almost stable, which was closely related to the formation of the passivation layer.…”

Section: Polarization Curvesmentioning

confidence: 99%

Salt spray corrosion behavior and electrochemical performance of Al and Ti reinforced Ni60 coating by laser cladding

Zhang

Dejun

2022

Materials & Corrosion

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Ni60 coatings with the additions of Al and Ti were prepared on S355 steel by laser cladding. The microstructure and phases of obtained coatings were analyzed using an ultra‐depth of field microscope and X‐ray diffraction, respectively. The effects of Al and Ti additions on the salt spray corrosion and electrochemical performances were investigated using a salt spray corrosion chamber and electrochemical workstation, and the corrosion mechanism was also discussed by the models of defect reactions and pitting corrosion. The results show that the crystal microstructure of Ni60 coatings with the Al and Ti additions is changed from dendritic to massive and granular. After the neutral salt spray test, the corrosion forms of Ni60, Ni60–Al, and Ni60–Al–Ti coatings are mainly pitting and intergranular corrosion in which the Ni60–Al–Ti coating exhibits the highest anti‐corrosion performance. The improvement of electrochemical performance for the Ni60–Al–Ti coating is attributed to the high compact structure and passive film, which provides fewer oxygen vacancies in the corrosion process due to the additions of Al and Ti.

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Immersion corrosion behavior, electrochemical performance and corrosion mechanism of subsonic flame sprayed FeCoCrMoSi amorphous coating in 3.5% NaCl solution

Cited by 20 publications

References 40 publications

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution

Superhydrophobic and Electrochemical Performance of CF2-Modified g-C3N4/Graphene Composite Film Deposited by PECVD

Salt spray corrosion behavior and electrochemical performance of Al and Ti reinforced Ni60 coating by laser cladding

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Immersion corrosion behavior, electrochemical performance and corrosion mechanism of subsonic flame sprayed FeCoCrMoSi amorphous coating in 3.5% NaCl solution

Cited by 20 publications

References 40 publications

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al2O3 coating in 3.5% NaCl solution

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al2O3 coating in 3.5% NaCl solution

Superhydrophobic and Electrochemical Performance of CF2-Modified g-C3N4/Graphene Composite Film Deposited by PECVD

Salt spray corrosion behavior and electrochemical performance of Al and Ti reinforced Ni60 coating by laser cladding

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Product

Resources

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Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution

Effects of Cr and Ta additions on microstructure, corrosion-wear and electrochemical performances of laser cladded Fe90-Al₂O₃ coating in 3.5% NaCl solution