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. 71 (2022), No. 10

  • As an Engineer Involved in the Field of Corrosion

    pp. 273-274

    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.71.273

    x

    Readers Who Read This Article Also Read

    1. Autonomous Flight Control of a Small Drone Outdoors Using Sliding Mode Control Transactions of the Institute of Systems, Control and Information Engineers Vol.35(2022), No.9
    2. Significance of Woody Biomass in Austria Other than as Renewable Energy Source Journal of the Japan Institute of Energy Vol.101(2022), No.11
    3. INFLUENCE OF PHASE CHARACTERISTICS OF INPUT GROUND MOTION ON SEISMIC RESPONSE OF LOW-MIDDLE-RISE OFFICE BUILDINGS Kou kouzou rombunshuu Vol.29(2022), No.115
  • Structure and Morphology of Zinc Rust Particles Prepared by Repeating Wet-Dry Cycles of Aqueous ZnCl2 Solutions

    pp. 279-283

    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.71.279

    To simulate the atmospheric corrosion of galvanized steels in salinity environment, artificial zinc rust particles were prepared by repeating wet-dry cycle of aqueous ZnCl2 solutions in the presence of zinc rusts such as ZnO and Hydrozincite (Zn5(OH)6(CO32: HZ), and the transformation behavior of added ZnO and HZ into zinc hydroxychloride (Zn5(OH)8Cl2・H2O: ZHC) was examined. The procedure constitutes one cycle of wetting(20℃ and 4 h) and drying (85℃ and 20 h). After 1 cycle, almost all the added ZnO and HZ were transformed into ZHC and its transformation rate was in the order of ZnO>HZ. Increasing the wet-dry cycles enhanced the crystallization and particle growth of ZHC and turned the irregular-shaped ZHC particles into plate-like ZHC ones. These results allow us to infer that initial zinc rusts such as ZnO and HZ generated on the galvanized steels by atmospheric corrosion in salinity environment at initial corrosion stage are immediately transformed into plate-like ZHC rust particles, which form a dense protective rust layer on the steels to enhance the corrosion resistance.
  • Effects of CO2 Partial Pressure and Drying Conditions on Carbonation of Mortars

    pp. 284-287

    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.71.284

    This study investigated the influence of the drying condition of the mortar specimens and the CO2 partial pressure during accelerated carbonation tests on the carbonation. The results show that when the change of the specimen’s mass due to drying was large and the CO2 partial pressure was high, the carbonation progress increased. Following the accelerated carbonation test, hyperbaric-oxygen accelerated corrosion tests were conducted. As a result, the steel embedded in the mortar specimens was corroded when the carbonation depth was almost the same as the mortar cover.
  • Evaluation of Corrosion Resistance of Au Plated Titanium Bipolar Plates for PEM Water Electrolysis

    pp. 288-291

    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.71.288

    Corrosion resistance and interfacial contact resistance (ICR) of titanium (Ti) bipolar plates for polymer electrolyte menbrane water electrolysis (PEMWE) with different Au plating thickness were evaluated by potentiostatic polarization in a sulfuric acid solution of pH 3.0. No dissolution of Ti was detected by the ICP-MS analysis (<1μg dm-3) when the Au plating thickness was 0.3μm or more. In the case of Ti with Au plating thickness of 0.1μm, Ti dissolved in the plating defects which were confirmed by ULV-SEM observation. The ICR increased after polarization test for Ti without plating, but not for Au plated Ti even with thickness of 0.1μm. These results indicate that microdefects in the plating layer can be starting points of dissolution of substrate, but do not immediately affect the increase in ICR as far as most of the surface remains covered.

Article Access Ranking

31 Jan. (Last 30 Days)

  1. Automatic Ultrasonic Testing of Non-metallic Inclusions Detectable with Size of Several Tens of Micrometers Using a Double Probe Technique along the Longitudinal Axis of a Small-diameter Bar ISIJ International Vol.61(2021), No.1
  2. Effect of microstructure on mechanical properties of quenching & partitioning steel ISIJ International Advance Publication
  3. Preface to the Special Issue on “Advanced Carbon Utilization Technologies and Processes for Sustainably Prosperous Society” ISIJ International Vol.62(2022), No.12
  4. Role and Potential of Aluminium and Its Alloys for a Zero-Carbon Society MATERIALS TRANSACTIONS Vol.64(2023), No.2
  5. A novel way refining the partially reverted globular austenite in reversion from martensite ISIJ International Advance Publication
  6. Soft Sensors and Diagnostic Models Using Real Time Data of Blast Furnaces at Tata Steel ISIJ International Vol.63(2023), No.1
  7. Interaction Coefficients of Cu and Sn with Mn in Molten Iron at 1873 K ISIJ International Vol.62(2022), No.12
  8. Iron ore granulation for sinter production: Developments, progress, and challenges ISIJ International Advance Publication
  9. Application of Variable Gauge Rolling Technology for Plate to Reduce the Head Impact ISIJ International Advance Publication
  10. Influence of the Slag Rim on the Heat Transfer Behavior of a Mold ISIJ International Advance Publication

Search Phrase Ranking

31 Jan. (Last 30 Days)

  1. blast furnace
  2. aaa
  3. process
  4. aaaa
  5. tetsu
  6. a
  7. aa
  8. ...
  9. experimental study on
  10. orange peel