Zairyo-to-Kankyo
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 1881-9664
PRINT ISSN: 0917-0480

Zairyo-to-Kankyo Vol. 61 (2012), No. 5

  • Subject and Future on Development for Inhibitor

    p. 201

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3323/jcorr.61.201

  • Effects of Metal Ions on Pitting Potential and Pit Growth Behavior for 316L Stainless Steel

    pp. 213-218

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3323/jcorr.61.213

    A potentiostatic method was used to measure pitting potential for SUS316L stainless steel and compared with a potentiodynamic polarization method standardized by JIS G 0577. Test conditions were sodium chloride solutions from 0.008 to 1 M containing metal ions less than 110 ppm at temperatures of 300 and 323 K. The pitting potentials of SUS316L steel decreased with the increases in concentration of chloride ions and in temperature. The test results of pitting potential were consistent between the potentiostatic and potentiodynamic polarization methods. The presence of metal ions in a 0.08 M sodium chloride solution greatly decreased the pitting potential of SUS316L steel. Pits were grown from a steel surface by using a galvanostatic method proposed in this study, and observed in a cross-sectional surface after the growth tests. As a results, it is found that the low current density or metal irons of Mn2+ and Cr3+ added in the sodium chloride solution changed the aspect ratio of cross-sectional pit morphology and promoted deeper pit growth. Mechanisms of pit initiation and growth were discussed in this study.
  • Corrosion Behavior of Austenitic Stainless Steels on the Cut Edge Surface

    pp. 219-226

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3323/jcorr.61.219

    The cut edge surface of the stainless steel sheet is susceptible to corrosion compared with the surface of the sheet. At the cut edge surface, red rust easily tends to occur by the attack of chloride ion. However, there are still a lot of points not clear about the cause of the cut edge corrosion.
    The salt spray test and the immersion test using NaCl solutions were conducted to evaluate corrosion resistance for the shear cut edge of SUS304 (18Cr-8Ni) and SUSXM7 (18Cr-9Ni-3Cu) cold rolled strips. It was found that transverse section (T section) corroded easier than longitudinal section (L section). In addition, the rust at the machined edge was less than shear cut edge.
    The difference of the corrosion behavior in each section, L and T, was investigated by the electrochemical method. In anodic polarization curves at T section, the current density rose gradually at the less-noble potential than the L section. By the SEM observation and EPMA elemental mappings after anodic polarization measurement, it was considered that non-metallic inclusions (MnS etc.) extended along the metal flow of rolling direction influenced on the initiation and the growth of pitting corrosion.

Article Access Ranking

04 Jul. (Last 30 Days)

  1. Production and Technology of Iron and Steel in Japan during 2021 ISIJ International Vol.62(2022), No.6
  2. Role of Interfacial Properties in the Evolution of Non-metallic Inclusions in Liquid Steel ISIJ International Advance Publication
  3. Preface to the Special Issue on “Frontier in Characterization of Materials and Processes for Steel Manufacturing” ISIJ International Vol.62(2022), No.5
  4. Hierarchical Deformation Heterogeneity during Lüders Band Propagation in an Fe-5Mn-0.1C Medium Mn Steel Clarified through in situ Scanning Electron Microscopy ISIJ International Advance Publication
  5. Wettability of Molten Fe–Al Alloys against Oxide Substrates with Various SiO2 Activity ISIJ International Advance Publication
  6. Reduction of CO2 Emissions from Blast Furnace Applying Reactive Coke Agglomerate and Hydrogen Reduction Tetsu-to-Hagané Vol.108(2022), No.6
  7. Application of Heat Transfer Coefficient Estimation Using Data Assimilation and a 1-D Solidification Model to 3-D Solidification Simulation ISIJ International Advance Publication
  8. Comparison of Oxidation Behavior of Various Reactive Elements in Alloys during Electroslag Remelting (ESR) Process: An Overview ISIJ International Advance Publication
  9. Nitrogen Solubility and Gas Nitriding Kinetics in Fe–Cr–Mo–C Alloy Melts under Pressurized Atmosphere ISIJ International Vol.62(2022), No.6
  10. Influence of Al2O3/SiO2 and BaO/Al2O3 Ratios on Rheological and Crystallization Behavior of CaO–BaO–Al2O3-Based Mold Slags ISIJ International Vol.62(2022), No.6

Search Phrase Ranking

04 Jul. (Last 30 Days)

  1. blast furnace
  2. inorganic coating corrosion
  3. blast furnace permeability
  4. blast furnace productivity
  5. chromate free coating
  6. si-killed spring steel
  7. steel
  8. 鉄と鋼
  9. a
  10. aaa