Zairyo-to-Kankyo
Online ISSN : 1881-9664
Print ISSN : 0917-0480
ISSN-L : 0917-0480
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Volume 62, Issue 9
Displaying 1-5 of 5 articles from this issue
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Commentary
Review
  • Application of High Temperature Materials Thermodynamics to Room-Temperature Pourbaix Diagrams for Multi-component Systems
    Harumi Yokokawa
    2013 Volume 62 Issue 9 Pages 303-309
    Published: September 15, 2013
    Released on J-STAGE: March 29, 2014
    DOIhttps://doi.org/10.3323/jcorr.62.303
    JOURNAL FREE ACCESS
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    The generalized chemical potential diagram for multi-component systems at high temperatures can provide useful and crucial information in examining materials behaviors in various environments including interfaces of dissimilar materials. This approach cannot apply directly to room temperature chemistry to be analyzed using the Pourbaix diagrams. Key concepts are discussed in terms of reasonable treatments of solid-solution equilibrium in view of kinetic considerations on nucleation and diffusion which make different room temperature chemistry from that at high temperatures. New construction strategies for multi-component Pourbaix diagrams are proposed with an emphasis of congruent dissolution process. Application to electrochemical process such as lithium batteries is shown as an interesting example.
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  • Corrosion Simulation Technology Based on Electrolyte Thermodynamics
    Kohtaroh Tanaka
    2013 Volume 62 Issue 9 Pages 310-316
    Published: September 15, 2013
    Released on J-STAGE: March 29, 2014
    DOIhttps://doi.org/10.3323/jcorr.62.310
    JOURNAL FREE ACCESS
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    Corrosion behavior of materials in aqueous solution can be quantitatively analyzed by simulation with electrolyte thermodynamic model, electrochemical kinetic model on material surface and mass-transfer and adsorption models between solution and material surface. This report introduces thermodynamic analysis method by real solution stability diagram, general corrosion rate estimation method by simulated polarization curves and localized corrosion susceptibility evaluation method by repassivation potential with concrete validation examples.
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Research Paper
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