An Electrochemical And Surface Analytical Investigation Of Iron Oxidation Passivation And Corrosion Inhibition
DOWNLOAD
Download An Electrochemical And Surface Analytical Investigation Of Iron Oxidation Passivation And Corrosion Inhibition PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get An Electrochemical And Surface Analytical Investigation Of Iron Oxidation Passivation And Corrosion Inhibition book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
An Electrochemical And Surface Analytical Investigation Of Iron Oxidation Passivation And Corrosion Inhibition
DOWNLOAD
Author : Michael Anthony Kamrath
language : en
Publisher:
Release Date : 1991
An Electrochemical And Surface Analytical Investigation Of Iron Oxidation Passivation And Corrosion Inhibition written by Michael Anthony Kamrath and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
A combined electrochemical and surface analytical study of iron oxidation, passive film formation and corrosion inhibitor interaction is presented. Ultrahigh vacuum surface analysis by Auger electron spectroscopy (AES), low energy electron diffraction (LEED), thermal desorption mass spectrometry (TDMS) and ion bombardment (depth profiling) was used to investigate iron oxide films formed on iron by gas phase oxygen exposure as well as electrochemical polarization in borate buffer and corrosion inhibitor solutions. Oxygen exposure to the Fe(100) single crystal surface has unambiguously shown the formation of a c(2 x 2) LEED pattern during the oxide evolution. This step in the oxidation of the (100) surface is often not observed, most likely as a result of prior surface contamination. A calibration technique is also outlined in which the oxide film formed by oxygen exposure can be used to estimate thicknesses of films formed in solution. Passive film investigations by composition depth profiling and TDMS after exposure to borate buffer at various potentials have shown the film is hydrated. Composition depth profiles also indicate that a two-phase oxide is present. An inner barrier layer likely forms by direct substrate oxidation while an outer deposit layer is formed by deposition of solution complexes, especially those containing boron. Surface crystallographic differences are evident in the cyclic voltammetry, the potential-dependent AES surface spectra, and the eventual film thicknesses. Composition depth profiles of films formed on iron after exposure to inhibitor solutions under varying conditions of dissolved ions, pH, and potential have provided clues to reaction mechanisms. Inorganic orthophosphate is not incorporated into the films under deaerated conditions at any potential. In the presence of divalent calcium ion in solution, the film composition is potential dependent. Cathodic polarization produces calcium phosphate films while anodic polarization leads to iron phosphate phases. Again, two-phase barrier and deposit layer films are evident. An organic phosphonic acid, hydroxyethanediphosphonic acid (HEDPA), behaves similar to orthophosphate in deaerated solutions. Aerated solutions produce thicker films as do lower pHs. The mechanism of inhibition in both inorganic and organic inhibitor solutions appears to be through anodic or cathodic polarization.
An Electrochemical And Surface Analytical Estigation Of Iron Oxidation Passivation And Corrosion Inhibition
DOWNLOAD
Author : Michael Anthony Kamrath
language : en
Publisher:
Release Date : 1991
An Electrochemical And Surface Analytical Estigation Of Iron Oxidation Passivation And Corrosion Inhibition written by Michael Anthony Kamrath and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
Surfaces Inhibition And Passivation
DOWNLOAD
Author : E. McCafferty
language : en
Publisher:
Release Date : 1986
Surfaces Inhibition And Passivation written by E. McCafferty and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Corrosion and anti-corrosives categories.
An Electrochemical And Analytical Study Of Iron Corrosion Inhibitors
DOWNLOAD
Author : Ken Airey
language : en
Publisher:
Release Date : 1990
An Electrochemical And Analytical Study Of Iron Corrosion Inhibitors written by Ken Airey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
Electrochemical And Optical Techniques For The Study And Monitoring Of Metallic Corrosion
DOWNLOAD
Author : M.G.S Ferreira
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Electrochemical And Optical Techniques For The Study And Monitoring Of Metallic Corrosion written by M.G.S Ferreira and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
In spite of considerable efforts over the years to understand and combat materials degradation via corrosion processes, many challenges still remain both in the theoretical understanding of the phenomena and in seeking pratical solutions to the perennial problem. Progress has been slow due to the complexity of the processes and the systems involved. Fortunately, in recent years there has been a renaissance in the development of new electrochemical and optical techniques, as well as advances in instrumentation, which have greatly aided our quest to gain insight into the complex mechanisms involved in metallic corrosion and passivation. Numerous scientific meetings, symposia, and workshops have been held allover the world which attest to the frenzy of activities in corrosion science and technology. However, most of these conferences have dealt mainly with recent research results. There appeared to be a need to assess and disseminate our present state of knowledge in the field as regards measurement techniques, theory, and instrumentation. The present NATO Advanced Study Institute was therefore held in Viana do Castelo, Portugal from July 9 to 21, 1989. The Institute consisted of a series of tutorial lectures, poster sessions, and round-table discussions interspersed evenly over the two-week period. It was attended by 75 participants from several countries representing industry, government and university laboratories.
Dissertation Abstracts International
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2002
Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Dissertations, Academic categories.
Organic Inhibitors Of Corrosion Of Metals
DOWNLOAD
Author : Y.I. Kuznetsov
language : en
Publisher: Springer Science & Business Media
Release Date : 1996-04-30
Organic Inhibitors Of Corrosion Of Metals written by Y.I. Kuznetsov and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-04-30 with Science categories.
Organic Inhibitors of Corrosion of Metals provides a detailed review of the various theories advanced to explain the mechanisms of organic inhibitors. Author Yu.I. Kuznetsov explores the role of potential and charge of the metal, the nature of the organic species used as the inhibitor, and the function of the solvent. The author draws connections between these key elements and the processes of passivation, pitting, synergism, and complex formation. This unique volume brings together the mechanistic and practical aspects of corrosion control by organic inhibitors.
Metals Abstracts
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1996
Metals Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Metallurgy categories.
Electrochemical Thermodynamic Surface And Spectroscopic Study In Inhibition Of Iron Corrosion With Turmeric Root Extract Tre
DOWNLOAD
Author : Khuloud Almzarzie
language : en
Publisher:
Release Date : 2018
Electrochemical Thermodynamic Surface And Spectroscopic Study In Inhibition Of Iron Corrosion With Turmeric Root Extract Tre written by Khuloud Almzarzie and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Electronic books categories.
Turmeric root extract was tested as corrosion inhibitor for iron in 0.5¬†M HCl, using potentiodynamic polarization and electrochemical impedance spectroscopy, scanning electron microscope, and energy dispersive X-ray analysis. The inhibition efficiency increases as the time of immersion rises but decreases with temperature rise. The Nyquist plots showed that the charge transfer resistance increases and the double-layer capacitance decreases as the time of immersion increases. Tafel results show that both corrosion current and corrosion speed are reduced with time of immersion. All impedance spectra of EIS tests exhibit one capacitive loop, which indicates that the corrosion reaction is controlled by charge transfer process. Inhibition efficiency increases with the concentration of the inhibitor reaching its maximum value, 88.90%, at 8¬†g/100¬†mL. Thermodynamic parameters, Ea, ,àÜH*, and ,àÜS*, were estimated, and the mechanism of corrosion and inhibition was discussed. The adsorption of turmeric root extract followed Langmuir adsorption isotherm.
Journal Of Research Of The National Bureau Of Standards
DOWNLOAD
Author : United States. National Bureau of Standards
language : en
Publisher:
Release Date : 1988
Journal Of Research Of The National Bureau Of Standards written by United States. National Bureau of Standards and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Chemistry categories.