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Zairyo-to-Kankyo
Vol. 69 (2020), No. 1

Zairyo-to-Kankyo Vol. 69 (2020), No. 1

ONLINE ISSN:	1881-9664
PRINT ISSN:	0917-0480
Publisher:	Japan Society of Corrosion Engineering

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Vol. 72 (2023)
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Keyword Ranking

09 Dec. (Last 30 Days)

Zairyo-to-Kankyo Vol. 69 (2020), No. 1

Joint Research Committee

Hiroshi Kawakami

pp. 1-2

DOI:

10.3323/jcorr.69.1

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Article Title

Joint Research Committee

Bibtex

Ris

Analysis on the Growth Mechanism of Corrosion Products of Copper Materials Containing Brass by Voltammetry

Shigeyoshi Nakayama, Aiko Tominaga, Hiroyuki Fujioka, Takenori Notoya, Toshiyuki Osakai

pp. 10-16

DOI:

10.3323/jcorr.69.10

Abstract

Corrosion products on the brass surface were characterized by voltammetry with a high alkaline electrolyte solution （6 M KOH＋1 M LiOH）. In addition to copper oxides （Cu₂O and CuO）, zinc oxide （ZnO） was also confirmed on corroded brass surfaces. Depending on corrosion conditions, the amounts of the respective oxides formed on brass surfaces were varied. In the corrosion test in which brass is immersed in a NaCl solution （by assuming dezincification corrosion）, Cu₂O was selectively formed, and then grew significantly in NaCl solution at the concentration of 0.1％ or less. However, when the concentration exceeded 1％, the formation of ZnO was newly confirmed. It was suggested that the formation and growth behaviors of the oxides on brass should be affected by the diffusion rate of zinc dependent on the concentration of NaCl solution.

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Analysis on the Growth Mechanism of Corrosion Products of Copper Materials Containing Brass by Voltammetry

Bibtex

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Effect of Deposits on Corrosion of Copper Tubes in a Circulating Cooling Water System

Hidefumi Yamanaka, Tomoyuki Nagai, Hidemasa Nonaka, Hiroaki Tsuchiya, Shinji Fujimoto

pp. 17-25

DOI:

10.3323/jcorr.69.17

Abstract

In the present study, possible effect of deposits on the corrosion of copper pipes in concentrated cooling water has been examined. It was considered that during the localized corrosion of copper pipes, the cathodic process took place on the intact sites of carbonaceous films, whereas the anodic process occurred on their defective sites. The deposits covering the defects of carbonaceous films significantly affected the corrosion of copper pipes. In particular, the presence of iron rust strongly enhanced the anodic reaction, resulting in severe corrosion. The enhanced anodic reaction was attributed to the suppressed formation of a protective oxide film most likely due to the lower pH of the areas located beneath the iron rust. It was suggested that the pretreatment to form a protective copper oxide film onto the copper pipe surface inhibited the corrosion process beneath the iron rust deposit.

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Article Title

Effect of Deposits on Corrosion of Copper Tubes in a Circulating Cooling Water System

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Ris

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Zairyo-to-Kankyo Vol. 69 (2020), No. 1

Keyword Ranking

filiform corrosion of zn-mg-al coated steel

grain boundary amelioration

electromagnetic steel plate

inclusions and reduction of their amount in the continuous casting process

y. iwanaga

y. iwanaga: tetsu to hagane, 1982, vol. 68, pp. 740–49.

1982

bridging oxygen

dual phase steel

effects of manganese toxicity on the growth of soybeans at the seedling stage and the absorption of iron and magnesium

Zairyo-to-Kankyo Vol. 69 (2020), No. 1

Joint Research Committee

Share it with SNS

Analysis on the Growth Mechanism of Corrosion Products of Copper Materials Containing Brass by Voltammetry

Share it with SNS

Effect of Deposits on Corrosion of Copper Tubes in a Circulating Cooling Water System

Share it with SNS

Article Access Ranking

Visualization of hydrogen and hydrogen-induced defects in tensile-deformed pure iron using hydrogen microprint and tritium autoradiography

Modification of Non-metallic Inclusions in Steel by Calcium Treatment: A Review

Experiment and Conformation of Non-sinusoidal Oscillation Waveform Function for Continuous Casting Mold

Formation and Prevention of Nozzle Clogging during the Continuous Casting of Steels: A Review

Microstructure estimation by combining deep learning and phase transformation model

Experimental and Numerical Study on Tapping of Two Liquids through a Single Tap-Hole

Fundamentally Different Magnetoresistance Mechanisms in Related Co/Pd and Co/Pt Multilayers for Spintronic Applications

First-Principles Calculations of Hydrogen Trapping Energy on Incoherent Interfaces of Aluminum Alloys

Hydrogen Embrittlement Property of a 1.5 GPa Dual-Phase Steel Evaluated Using U-bending Test: A Comparison with Tempered Martensitic Steel with Identical Tensile Strength

In-situ Observation of Sintering Interface between Al₂O₃ Particle / Single Crystalline Al₂O₃ Plate through Single Crystalline Al₂O₃ Plate

Advanced Search

Zairyo-to-Kankyo Vol. 69 (2020), No. 1

Keyword Ranking

filiform corrosion of zn-mg-al coated steel

grain boundary amelioration

electromagnetic steel plate

inclusions and reduction of their amount in the continuous casting process

y. iwanaga

y. iwanaga: tetsu to hagane, 1982, vol. 68, pp. 740–49.

1982

bridging oxygen

dual phase steel

effects of manganese toxicity on the growth of soybeans at the seedling stage and the absorption of iron and magnesium

Zairyo-to-Kankyo Vol. 69 (2020), No. 1

Joint Research Committee

Share it with SNS

Analysis on the Growth Mechanism of Corrosion Products of Copper Materials Containing Brass by Voltammetry

Share it with SNS

Effect of Deposits on Corrosion of Copper Tubes in a Circulating Cooling Water System

Share it with SNS

Article Access Ranking

Visualization of hydrogen and hydrogen-induced defects in tensile-deformed pure iron using hydrogen microprint and tritium autoradiography

Modification of Non-metallic Inclusions in Steel by Calcium Treatment: A Review

Experiment and Conformation of Non-sinusoidal Oscillation Waveform Function for Continuous Casting Mold

Formation and Prevention of Nozzle Clogging during the Continuous Casting of Steels: A Review

Microstructure estimation by combining deep learning and phase transformation model

Experimental and Numerical Study on Tapping of Two Liquids through a Single Tap-Hole

Fundamentally Different Magnetoresistance Mechanisms in Related Co/Pd and Co/Pt Multilayers for Spintronic Applications

First-Principles Calculations of Hydrogen Trapping Energy on Incoherent Interfaces of Aluminum Alloys

Hydrogen Embrittlement Property of a 1.5 GPa Dual-Phase Steel Evaluated Using U-bending Test: A Comparison with Tempered Martensitic Steel with Identical Tensile Strength

In-situ Observation of Sintering Interface between Al2O3 Particle / Single Crystalline Al2O3 Plate through Single Crystalline Al2O3 Plate

Advanced Search

In-situ Observation of Sintering Interface between Al₂O₃ Particle / Single Crystalline Al₂O₃ Plate through Single Crystalline Al₂O₃ Plate