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Zairyo-to-Kankyo
Vol. 73 (2024), No. 11

Zairyo-to-Kankyo Vol. 73 (2024), No. 11

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

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Zairyo-to-Kankyo Vol. 73 (2024), No. 11

Future Prospects for Corrosion Science

Eiji Akiyama

pp. 247-248

DOI:

10.3323/jcorr.73.247

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Article Title

Future Prospects for Corrosion Science

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Ris

Localized Corrosion due to the Reverse of Electrical Potential between the Zinc and the Steel of Galvanized Steel Pipes

Toshihiro Yamate

pp. 250-262

DOI:

10.3323/jcorr.73.250

Abstract

The standard electrode potential of zinc is 323 mV lessnoble compared with iron （steel）. However, zinc shows high corrosion resistance with the oxide film formed on the surface in pH neutral-weak alkali area compared with iron. Therefore, galvanized steel is used all over the world. However, the potential of zinc might rise while using it, and the potential reversal of zinc and steel be caused. In that case, the corrosion of steel is accelerated because there is an effect with cathode/anode area ratio in the zinc plating layer defect part by the localized corrosion etc., too. As a result, it might cause the water leak accident. Actually, the localized corrosion that originated in the potential reversal of steel/zinc frequently occurred in the cold and hot water piping and the sprinkler piping system. The potential reversal of steel/zinc was verified by the sample measurement. In this report, it introduces the corrosion case with building piping systems by the potential reversal of steel/zinc. Moreover, the mechanism and measures are described.

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Zairyo-to-Kankyo Vol. 73 (2024), No. 11

Keyword Ranking

midrex phosphorus

modelling rolling microstructure and its effects during multipass hot

spreadsheet modelling of grain size evolution during rod rolling

abstract

austenite grain growth kinetics

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Zairyo-to-Kankyo Vol. 73 (2024), No. 11

Future Prospects for Corrosion Science

Share it with SNS

Localized Corrosion due to the Reverse of Electrical Potential between the Zinc and the Steel of Galvanized Steel Pipes

Share it with SNS

Article Access Ranking

Wettability of CaS Against Molten Iron at 1873 K

Surface defect detection of continuous casting slabs based on deep learning

Perspectives on the Promising Pathways to Zero Carbon Emissions in the Steel Industry toward 2050

Mineral Phase Ratio of MEBIOS sinter and its Reducibility under Blast Furnace Condition with High Hydrogen Concentration

Analysis of Heat and Mass Transfer for Hydrogen-enriched Direct Reduction Process Based on DEM-CFD

The investigation into the impact of the spatial arrangement of MMI desulfurization bubble clusters on molten iron fluctuations using the VOF method

Coating Structure and Corrosion Mechanism of Zn-19%Al-6%Mg Alloy Coating Layer

Effect of Cu on Solidification Microstructure and Solidification Process in High Carbon High Speed Steel Type Cast Alloy

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Advanced Search

Zairyo-to-Kankyo Vol. 73 (2024), No. 11

Keyword Ranking

midrex phosphorus

modelling rolling microstructure and its effects during multipass hot

spreadsheet modelling of grain size evolution during rod rolling

abstract

austenite grain growth kinetics

control of secondary recrystallization in grain-oriented silicon steel

cr recovery

finex® as an environmentally sustainable ironmaking process

hydrogen trapping

influence of micro-scale martensite on rail fatigue life

Zairyo-to-Kankyo Vol. 73 (2024), No. 11

Future Prospects for Corrosion Science

Share it with SNS

Localized Corrosion due to the Reverse of Electrical Potential between the Zinc and the Steel of Galvanized Steel Pipes

Share it with SNS

Article Access Ranking

Wettability of CaS Against Molten Iron at 1873 K

Surface defect detection of continuous casting slabs based on deep learning

Perspectives on the Promising Pathways to Zero Carbon Emissions in the Steel Industry toward 2050

Mineral Phase Ratio of MEBIOS sinter and its Reducibility under Blast Furnace Condition with High Hydrogen Concentration

Analysis of Heat and Mass Transfer for Hydrogen-enriched Direct Reduction Process Based on DEM-CFD

The investigation into the impact of the spatial arrangement of MMI desulfurization bubble clusters on molten iron fluctuations using the VOF method

Coating Structure and Corrosion Mechanism of Zn-19%Al-6%Mg Alloy Coating Layer

Effect of Cu on Solidification Microstructure and Solidification Process in High Carbon High Speed Steel Type Cast Alloy

Structure of Metallic Iron Formed in Iron Ores by CO-H2 Reduction

Effect of Heating Rate on the Non-Isothermal Hydrogen Reduction of Hematite Pellets

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Structure of Metallic Iron Formed in Iron Ores by CO-H₂ Reduction