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Anodic Protection

The Experts below are selected from a list of 174 Experts worldwide ranked by ideXlab platform

Alvaro Meneguzzi – 1st expert on this subject based on the ideXlab platform

  • Anticorrosive acrylic intelligent paint
    Chemical Papers, 2019
    Co-Authors: Rodrigo Sanchotene Silva, Jane Zoppas Ferreira, Alvaro Meneguzzi

    Abstract:

    The use of intrinsically conductive polymers, such as polyaniline (PAni), has been presented as an option for coatings or component of organic coatings with anticorrosive properties due to their electrochemical properties. From this, in this study was produced a binder composed by mixture of PAni base emeraldine (BE) to a plasticizer electrochemically inert plasticiser. The blend was added to a commercial acrylic paint (CAP), for the production of an acrylic intelligent paint (AIP) with anticorrosion properties, acting in Anodic Protection of carbon steel. The paint produced was characterized by physical–chemical methods of thickness measurement, scanning electron microscopy and RAMAN spectroscopy, which presented results indicating that the PAni BE binder is contained in the CAP, in resin form, in addition to preserve the main functions and desirable electrochemical characteristics of PAni for application as an anticorrosive coating. The electrochemical tests of cyclic voltammetry, open circuit potential and electrochemical impedance spectroscopy demonstrated that AIP acts to protect against corrosion of carbon steel via Anodic Protection.

  • Anodic Protection obtained by applying smart paint in carbon steel
    XX Congresso Brasileiro de Engenharia Química, 2015
    Co-Authors: Rodrigo Sanchotene Silva, Jane Zoppas Ferreira, Vitor Silveira Maggi, Alvaro Meneguzzi

    Abstract:

    This work search introduce of a new alternative of organic coating without the presence of hazardous metals and replacement of commercial rectifiers used for Protection of oxidized metals by the method of Anodic Protection. From this, was produced of a Smart Paint (SP), basically composed of a Paint Polyurethane Commercial (PPC) mixed with a 1% of binder de base PAni EB and plasticizer chemically inert 4chloro-3-methylphenol. After, the SP and PPC were applied in plates of carbon steel, with the use of dip coat technique. SP was characterized by thermal analyzes and physicochemical beyond perform electrochemical tests of Cyclic Voltammetry (CV) and Open Circuit Potential (OCP), in aqueous solution 2 mol.L H2SO4. The results obtained allow us to state that the application of the binder to the PPC not significantly alters their physicochemical properties, and that the binder adds the ability to induce the formation or maintenance of protective oxides in oxidized metals exposed to harsh environments.

  • smart paint for Anodic Protection of steel
    Progress in Organic Coatings, 2015
    Co-Authors: Rodrigo Sanchotene Silva, Jane Zoppas Ferreira, Carlos Arthur Ferreira, Carlos Aleman, Elaine Armelin, Alvaro Meneguzzi

    Abstract:

    In order to overcome the difficulties associated to the solubility and mechanical integrity of polyaniline (PAni) films, in this work we develop a binder by mixing PAni in the oxidized and undoped state (emeraldine base form) with 4-chloro-3-methylphenol, a plasticizer, and solvent. This binder has been used as a coating alone or combined with a conventional nitrocellulose paint to formulate the called Smart Paint. The characterization of binder films, which are cohesive and self-standing, shows the preservation of PAni properties, indicating that they satisfy the typical characteristics of anticorrosive coatings. Electrochemical assays have been carried out in H2SO4 solution using AISI 1006 steel plates coated with the binder and the Smart Paint. Results indicate that the binder and the Smart Paint promote the passivation of the metal substrate, reflecting their protecting abilities against corrosion. (C) 2014 Elsevier B.V. All rights reserved.

Rodrigo Sanchotene Silva – 2nd expert on this subject based on the ideXlab platform

  • Anticorrosive acrylic intelligent paint
    Chemical Papers, 2019
    Co-Authors: Rodrigo Sanchotene Silva, Jane Zoppas Ferreira, Alvaro Meneguzzi

    Abstract:

    The use of intrinsically conductive polymers, such as polyaniline (PAni), has been presented as an option for coatings or component of organic coatings with anticorrosive properties due to their electrochemical properties. From this, in this study was produced a binder composed by mixture of PAni base emeraldine (BE) to a plasticizer electrochemically inert plasticiser. The blend was added to a commercial acrylic paint (CAP), for the production of an acrylic intelligent paint (AIP) with anticorrosion properties, acting in Anodic Protection of carbon steel. The paint produced was characterized by physical–chemical methods of thickness measurement, scanning electron microscopy and RAMAN spectroscopy, which presented results indicating that the PAni BE binder is contained in the CAP, in resin form, in addition to preserve the main functions and desirable electrochemical characteristics of PAni for application as an anticorrosive coating. The electrochemical tests of cyclic voltammetry, open circuit potential and electrochemical impedance spectroscopy demonstrated that AIP acts to protect against corrosion of carbon steel via Anodic Protection.

  • Anodic Protection obtained by applying smart paint in carbon steel
    XX Congresso Brasileiro de Engenharia Química, 2015
    Co-Authors: Rodrigo Sanchotene Silva, Jane Zoppas Ferreira, Vitor Silveira Maggi, Alvaro Meneguzzi

    Abstract:

    This work search introduce of a new alternative of organic coating without the presence of hazardous metals and replacement of commercial rectifiers used for Protection of oxidized metals by the method of Anodic Protection. From this, was produced of a Smart Paint (SP), basically composed of a Paint Polyurethane Commercial (PPC) mixed with a 1% of binder de base PAni EB and plasticizer chemically inert 4chloro-3-methylphenol. After, the SP and PPC were applied in plates of carbon steel, with the use of dip coat technique. SP was characterized by thermal analyzes and physicochemical beyond perform electrochemical tests of Cyclic Voltammetry (CV) and Open Circuit Potential (OCP), in aqueous solution 2 mol.L H2SO4. The results obtained allow us to state that the application of the binder to the PPC not significantly alters their physicochemical properties, and that the binder adds the ability to induce the formation or maintenance of protective oxides in oxidized metals exposed to harsh environments.

  • smart paint for Anodic Protection of steel
    Progress in Organic Coatings, 2015
    Co-Authors: Rodrigo Sanchotene Silva, Jane Zoppas Ferreira, Carlos Arthur Ferreira, Carlos Aleman, Elaine Armelin, Alvaro Meneguzzi

    Abstract:

    In order to overcome the difficulties associated to the solubility and mechanical integrity of polyaniline (PAni) films, in this work we develop a binder by mixing PAni in the oxidized and undoped state (emeraldine base form) with 4-chloro-3-methylphenol, a plasticizer, and solvent. This binder has been used as a coating alone or combined with a conventional nitrocellulose paint to formulate the called Smart Paint. The characterization of binder films, which are cohesive and self-standing, shows the preservation of PAni properties, indicating that they satisfy the typical characteristics of anticorrosive coatings. Electrochemical assays have been carried out in H2SO4 solution using AISI 1006 steel plates coated with the binder and the Smart Paint. Results indicate that the binder and the Smart Paint promote the passivation of the metal substrate, reflecting their protecting abilities against corrosion. (C) 2014 Elsevier B.V. All rights reserved.

Jie Hu – 3rd expert on this subject based on the ideXlab platform

  • the use of doped polyaniline as an electrode in the galvanic Anodic Protection of ferrous metals in industrial acid solutions
    Materials and Corrosion-werkstoffe Und Korrosion, 2007
    Co-Authors: Jie Hu, Shuhu Xiao, Lian Zhong

    Abstract:

    In order to investigate the galvanic Anodic Protection (GAP) of ferrous metals (such as 410, 304 and 316 stainless steels) in acid solutions by doped polyaniline (PANi), separate doped PANi powder-pressed electrodes with different surface areas (the area ratio of the PANi electrode to stainless steel is between 1:1 and 1:2) have been prepared. These were coupled with ferrous metal in the following solutions: 5 M sulphuric acid, 5 M phosphoric acid and industrial phosphoric acid (containing 5 M phosphoric acid and 0.05% chloride ion) to construct a galvanic cell, in which PANi is cathode while ferrous metal is anode. The results indicate that a PANi electrode with sufficient area can provide corrosion Protection to stainless steel in these acidic solutions. A pilot scale coupling experiment was carried out. The results indicate that PANi is a promising material as an electrode for the Anodic Protection of ferrous metals in acidic solutions in industrial situations.

  • application of polyaniline to galvanic Anodic Protection on stainless steel in h2so4 solutions
    Corrosion Science, 2006
    Co-Authors: Lian Zhong, Shuhu Xiao, Jie Hu

    Abstract:

    A stand-alone polyaniline (PANI) film electrode was made and then applied to protect 1Cr13 stainless steel (a type of stainless steel typically used in China, 0-15% C, 13% Cr) from corrosion in highly acidic solution, up to 5 M H2SO4. The stand-alone PANI electrode and 1Cr13 were coupled to study their galvanic interactions. PANI is a cathode while 1Cr13 is an Anodic. The results indicate that PANI with a certain area can quickly passivate the stainless steel and effectively maintain the steady passive state for a long period of time. This specific method of PANI preventing 1Cr13 from corrosion is called galvanic Anodic Protection (GAP). Moreover, the efficiency, mechanism, and security of GAP were discussed. The results demonstrate that the stand-alone PANI electrode may have a potential application to galvanic Anodic Protection on stainless steel in highly corrosive H2SO4 solutions. (c) 2006 Elsevier Ltd. All rights reserved.