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. 57 (2008), No. 12

  • A Significance of Defense for ···

    pp. 513-513

    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.57.513

  • Role of Chemistry in Analysis on the Leakage Incident of Sodium from the Fast Breeder Reactor of “Monjyu”

    pp. 514-523

    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.57.514

    The chemical reactions of Na-Fe-O2-H2O system and their equilibrium constants (600∼1200 K) were expressed in terms of standard equilibrium O2 pressure P0 and standard potential E0. The results were graphically illustrated on the equilibrium daiagrams of log P(O2)(O2 partial pressure) vs. log(Na2O)(basicity) or E(potential) vs. log(O2−)(basicity). These daiagrams visually and comprehensively show the equilibrium relations in the reactions among molten Na with O2, H2O and Fe with their reaction products and give a useful information for analysis of the leakage incident of sodium from the fast breeder reactor of “Monjyu”.
  • Corrosion Behavior of Stainless Steel in Nitric Acid Solutions Including Neptunium

    pp. 536-541

    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.57.536

    In order to investigate a corrosion behavior of stainless steel in the typical nuclear fuel reprocessing plant, corrosion tests using nitric acid solution with neptunium were conducted under atmospheric and the reduced pressure conditions in the laboratory where radioactive substance could be handled. An ultra low carbon type of SUS304ULC stainless steel was used. Obtained results were as follows: Under the reduced pressure condition, corrosion of the stainless steel was accelerated in the nitric acid solution with neptunium than in pure nitric acid solution. Under an atmospheric condition, the corrosion rate of the stainless steel increased with increase of neptunium content. The higher solution temperature enhanced the corrosion rate of the stainless steel in the nitric acid solution with neptunium. Thermodynamic data showed that Np(V) oxidized to Np(VI) by concentrated and elevated nitric acid solution. The corrosion potential of the stainless steel shifted to nobler direction in the nitric acid solution with neptunium. It is estimated that the electrochemical reaction of Np(VI)/Np(V) is reversible and the rate constant of the reaction has great values. And it is considered that the dominance of Np(VI) in nitric acid solution accelerated the corrosion rate of the stainless steel in the solutions with neptunium.
  • Development of Monitoring Method for Coating Condition inside Ballast Tank using Numerical Inverse Analysis

    pp. 542-547

    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.57.542

    We developed the quantitative monitoring method for coating condition inside a ballast tank. We proposed the coating condition is evaluated with the surface resistance. We developed the identification method to obtain the whole surface resistance from the differential potential induced by the impressed current from an optional anode inside a tank. We introduced differential potential measurement and inverse analysis to obtain the surface resistance representing the coating condition. The potential measurement and quantitative evaluation were conducted in the actual ship. The verification was performed and there was the good agreement between the proposed method and the preliminary visual inspection.

Article Access Ranking

21 Sep. (Last 30 Days)

  1. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  2. Recent Progress of Instrumentation Technology for Process Automation in Steel Industry Tetsu-to-Hagané Vol.106(2020), No.9
  3. Melting Erosion Failure Mechanism of Tuyere in Blast Furnace ISIJ International Advance Publication
  4. Accuracy Improvement of the XRD-Rietveld Method for the Quantification of Crystalline Phases in Iron Sintered Ores through the Correction of Micro-absorption Effects ISIJ International Advance Publication
  5. An Empirical Comparative Study of Renewable Biochar and Fossil Carbon as Carburizer in Steelmaking ISIJ International Advance Publication
  6. Review on the High-Temperature Thermophysical Properties of Continuous Casting Mold Fluxes for Highly Alloyed Steels Tetsu-to-Hagané Advance Publication
  7. Evaluation and Prediction of Blast Furnace Status Based on Big Data Platform of Ironmaking and Data Mining ISIJ International Advance Publication
  8. Potential Influences of Impurities on Properties of Recycled Carbon Steel ISIJ International Advance Publication
  9. Optimization Analysis of Mechanical Performance of Copper Stave with Special-shaped Tubes in the Blast Furnace Bosh ISIJ International Advance Publication
  10. Influence of Soil Particle Size, Covering Thickness, and pH on Soil Corrosion of Carbon Steel ISIJ International Advance Publication

Search Phrase Ranking

21 Sep. (Last 30 Days)

  1. blast furnace
  2. blast furnace productivity
  3. jeong-sik kim
  4. blast furnace permeability
  5. continuous casting of copper alloys
  6. 柳修介
  7. isij international
  8. tetsu
  9. tetsu-to-hagane
  10. エッジドロップ