• Title/Summary/Keyword: electrochemical coating

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Evaluation Anticorrosive Properties of Corrosion Protective Organic Coatings by Electrochemical Impedance Spectroscopy (교류임피던스법에 의한 유기도막의 방식성 평가)

  • 박진환;이근대;전호환
    • Journal of the Society of Naval Architects of Korea
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    • v.41 no.1
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    • pp.88-93
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    • 2004

  • Electrochemical impedance spectroscopy was used to evaluate the anticorrosive properties of resin(alkyd, epoxy, urethane) and pigment(hydroxy apatite(HAp), zinc potassium chromate(ZPC). red lead(RL)). The corrosion behavior of coatings applied on steel has been investigated during exposure to 0.5M-NaCl The anticorrosive performances of resins were found to depend on their chemical nature and decreased in the order of urethane > epoxy > alkyd resin coating. Hydroxy apatite and zinc potassium chromate pigment which have property to passivate the substrate showed relatively high anticorrosive performance.

  • https://doi.org/10.3744/SNAK.2004.41.1.088 인용 PDF KSCI

Cut Edge Corrosion of Painted Zn and 55%Al-Zn Coated Steels under Alternate Wetting and Drying

  • Nishikata, A.;Tsuda, T.;Tsuru, T.
    • Corrosion Science and Technology
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    • v.9 no.1
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    • pp.34-38
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    • 2010

  • Electrochemical study on cut edge corrosion of prepainted Zn coated (GI) and 55%Al-Zn coated (GL) steels has been performed in wet-dry cyclic conditions. Maximum width of delaminated polymer coating from the cut edge for GI and GL specimens was evaluated under wet-dry cyclic conditions. The cyclic tests were carried out for 1000 h by changing of relative humidity, where the salt of NaCl was deposited on the specimen every 48 h. The cut edge corrosion test under NaCl deposit indicated that the delamination of the GL specimen progresses at a higher rate than the GI. The electrochemical corrosion monitoring was also performed under condition of alternate exposure to immersion in NaCl solution and drying at 60%RH and $25^{\circ}C$. On the basis of the results of the delamination tests and electrochemical measurements, the mechanism of cut edge corrosion for GI and GL were discussed.

  • https://doi.org/10.14773/cst.2010.9.1.034 인용 PDF KSCI

Nanoparticles Modified With Cationic Thiol Surfactant as Efficient Inhibitors for the Corrosion of Carbon Steel

  • Azzam, Eid M.S.;Sami, Radwa M.;Alenezi, Khalaf M.;El Moll, Hani;Haque, A.
    • Journal of Electrochemical Science and Technology
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    • v.12 no.3
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    • pp.308-316
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    • 2021

  • In this work, we report synthesis, characterization and corrosion inhibition properties of cationic thiol surfactant-capped silver (SC-Ag-NPs) and gold (SC-Au-NPs) nanoparticles. SC-Ag-NPs and SC-Au-NPs were characterized using regular techniques include TEM. Corrosion study was carried out using carbon steel (CS) in 3.5% NaCl aqueous solution and characterized using multiple electrochemical techniques. Our results suggest that the paint containing SC-Ag-NPs and SC-Au-NPs endow efficient corrosion protection to the CS. Especially, SC-Au-NPs based paint form a stronger barrier between the metal and the corrosive ions, leading to better inhibition properties.

  • https://doi.org/10.33961/jecst.2021.00010 인용 PDF KSCI

A New Technology of Anti-corrosive of Metals in Atmospheric Environment

  • Chen, Ke Zhong
    • Corrosion Science and Technology
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    • v.2 no.4
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    • pp.194-196
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    • 2003

  • In this paper, a newest kind of anti-atmospheric corrosion method is introduced. This method does not adopt organic coating, plastic layer or metal plating, instead it adopts a kind of aqueous emulsion containing numerous tine solid compounds that are absorbed onto the component surface, which play the role of anti-electrochemical corrosion.

  • PDF KSCI