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Zairyo-to-Kankyo
Vol. 71 (2022), No. 2

Zairyo-to-Kankyo Vol. 71 (2022), No. 2

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

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Zairyo-to-Kankyo Vol. 71 (2022), No. 2

“What is essential is invisible to the eye.”

Kenji Amaya

pp. 33-34

DOI:

10.3323/jcorr.71.33

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Article Title

“What is essential is invisible to the eye.”

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Ris

Effect of Oxygen Concentration on Corrosion Rate of Carbon Steel in Air/solution Alternating Condition

Kyohei Otani, Fumiyoshi Ueno, Chiaki Kato

pp. 40-45

DOI:

10.3323/jcorr.71.40

Abstract

The purpose of this study is to investigate the effect of oxygen concentration in the air on the corrosion rate of carbon steel in an air/solution alternating environment in the low oxygen concentration range and to clarify the corrosion rate and corrosion mechanism of carbon steel depending on the oxygen concentration in air by the mass change of specimens before and after the corrosion test and observing the iron rust layer formed on the surface of carbon steel. The corrosion rate increases with increasing oxygen concentration in the air, and the gradient of the corrosion rate decreases gradually. The maximum erosion depth increased with increasing oxygen concentration except for the case of 1％ oxygen concentration, however, the maximum erosion depth for 1％ oxygen concentration was larger than that for 5％ air oxygen concentration. It was clarified from the cross-sectional observation that the reason for the specific increase in the maximum erosion depth only when the oxygen concentration was 1％ due to the localized corrosion of carbon steel.

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Effect of Oxygen Concentration on Corrosion Rate of Carbon Steel in Air/solution Alternating Condition

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Ris

Statistical Analysis of Nonmetallic Inclusions as Initiation Sites of Pitting Corrosion for Stainless Steel by All-surface Survey

Kenichiro Eguchi

pp. 46-56

DOI:

10.3323/jcorr.71.46

Abstract

All nonmetallic inclusions on the surface of a stainless steel sample were analyzed with a scanning electron microscope with a function of automatically observing and analyzing nonmetallic inclusions. The effect of the inclusion type and size on the tendency of pit initiation was then quantitatively evaluated by observing the pits generated on the sample surface. It was found that the probability of stable pit growth increased as the major axis of the inclusions increased, but no effect of the inclusion type was observed. However, an effect of the inclusion type on the tendency of repassivation pit initiation was observed.

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Article Title

Statistical Analysis of Nonmetallic Inclusions as Initiation Sites of Pitting Corrosion for Stainless Steel by All-surface Survey

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Zairyo-to-Kankyo Vol. 71 (2022), No. 2

Keyword Ranking

hot dip aluminising

blast furnace

加炭

desulpherization caf2

olac

shear stress distribution

statistical features of complex systems

statistical features of complex systems kuninaka

ushio

トーピード

Zairyo-to-Kankyo Vol. 71 (2022), No. 2

“What is essential is invisible to the eye.”

Share it with SNS

Effect of Oxygen Concentration on Corrosion Rate of Carbon Steel in Air/solution Alternating Condition

Share it with SNS

Statistical Analysis of Nonmetallic Inclusions as Initiation Sites of Pitting Corrosion for Stainless Steel by All-surface Survey

Share it with SNS

Article Access Ranking

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

Copper removal of liquid steel containing 0.25 % carbon using Fe₂O₃-CaCl₂-SiO₂ flux

Effect of BN surface segregation on coatability in hot-dip galvanizing of B-added steel

Factors affecting generation of iron fines in cold sheet rolling of steel

Growth, Removal, and Agglomeration of Various Type of Oxide Inclusions in Molten Steel

Effect of Deoxidizer Addition Sequence on Cleanliness of Al-killed and S-containing Steel: Industrial Trials and Thermodynamic Analysis

First-principles estimation of effect of solute atoms on hydrogen penetration from (100) surface in alpha iron: a rudimentary study of inhibitor elements

Progress of Hot Metal Treatment Technology and Future Outlook

Surface Cracking in Hot Rolling Process of Cu Bearing Steel Bar

Integrated Steelworks that Reduce CO₂ Emissions by More Than 80% — Challenge for Carbon-Neutral Integrated Steelworks —

Advanced Search

Zairyo-to-Kankyo Vol. 71 (2022), No. 2

Keyword Ranking

hot dip aluminising

blast furnace

加炭

desulpherization caf2

olac

shear stress distribution

statistical features of complex systems

statistical features of complex systems kuninaka

ushio

トーピード

Zairyo-to-Kankyo Vol. 71 (2022), No. 2

“What is essential is invisible to the eye.”

Share it with SNS

Effect of Oxygen Concentration on Corrosion Rate of Carbon Steel in Air/solution Alternating Condition

Share it with SNS

Statistical Analysis of Nonmetallic Inclusions as Initiation Sites of Pitting Corrosion for Stainless Steel by All-surface Survey

Share it with SNS

Article Access Ranking

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

Copper removal of liquid steel containing 0.25 % carbon using Fe2O3-CaCl2-SiO2 flux

Effect of BN surface segregation on coatability in hot-dip galvanizing of B-added steel

Factors affecting generation of iron fines in cold sheet rolling of steel

Growth, Removal, and Agglomeration of Various Type of Oxide Inclusions in Molten Steel

Effect of Deoxidizer Addition Sequence on Cleanliness of Al-killed and S-containing Steel: Industrial Trials and Thermodynamic Analysis

First-principles estimation of effect of solute atoms on hydrogen penetration from (100) surface in alpha iron: a rudimentary study of inhibitor elements

Progress of Hot Metal Treatment Technology and Future Outlook

Surface Cracking in Hot Rolling Process of Cu Bearing Steel Bar

Integrated Steelworks that Reduce CO2 Emissions by More Than 80% — Challenge for Carbon-Neutral Integrated Steelworks —

Advanced Search

Copper removal of liquid steel containing 0.25 % carbon using Fe₂O₃-CaCl₂-SiO₂ flux

Integrated Steelworks that Reduce CO₂ Emissions by More Than 80% — Challenge for Carbon-Neutral Integrated Steelworks —