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Zairyo-to-Kankyo
Vol. 73 (2024), No. 8

Zairyo-to-Kankyo Vol. 73 (2024), No. 8

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

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04 Jul. (Last 30 Days)

Zairyo-to-Kankyo Vol. 73 (2024), No. 8

JSCE for Me

Hideki Matsuda

pp. 183-184

DOI:

10.3323/jcorr.73.183

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Article Title

JSCE for Me

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Effects of Si in Water on Corrosion Behavior of Hot-dip Galvanizing

Koji Iwata, Shinichi Satoh

pp. 188-193

DOI:

10.3323/jcorr.73.188

Abstract

Effects of temperature and concentration of silicate anion in water on corrosion behavior of hot-dip galvanizing were investigated by immersion test, surface analysis, and cross-sectional observation. Immersion test using ion-exchanging water indicated that the corrosion rate decreased due to deterioration of water quality. X-ray fluorescence analysis revealed that much more Si exist on surface of hot-dip galvanizing sample after immersion test using deteriorated water compared to clean water. Now we prepared corroding liquid by adjusting the concentration of silicate anion using distilled water and sodium silicate in order to confirm the effect of concentration of silicate anion on corrosion rate by immersion test. In this test, higher concentration of silicate anion led to lower corrosion rate as well as in the immersion test using ion-exchanging water. Moreover, the influence on the corrosion inhibition by silicate anion was larger in corroding liquid at 60℃ than at 25℃. Glow discharge optical emission spectrometry revealed that more Si existed in the corrosion products on surface of hot-dip galvanizing immersed in 60℃ than in 25℃ water, and the thickness of corrosion products containing Si was about 20-30 nm by cross-sectional SEM image.

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Zairyo-to-Kankyo Vol.73(2024), No.8

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Article Title

Effects of Si in Water on Corrosion Behavior of Hot-dip Galvanizing

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Visualization of Microscopic Hydrogen Diffusion in Polycrystalline Pure Ni Using an Ir Complex

Saya Ajito, Hiroshi Kakinuma, Motomichi Koyama, Eiji Akiyama

pp. 194-199

DOI:

10.3323/jcorr.73.194

Abstract

Microscopic hydrogen visualization has long been required to clarify the hydrogen embrittlement mechanism of metallic materials. In this study, hydrogen diffusion depending on microstructure in polycrystalline pure nickel film was successfully visualized using an Ir complex, whose color changes with hydrogen. The hydrogen flux in nickel was found to be large at random grain boundaries and small inside grains and at coincidence site lattice grain boundaries.

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Effect of Diffusion Rate of Oxygen on Soil Corrosion and Evaluation of that in Soil

Zairyo-to-Kankyo Vol.73(2024), No.8

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Article Title

Visualization of Microscopic Hydrogen Diffusion in Polycrystalline Pure Ni Using an Ir Complex

Bibtex

Ris

Effect of Diffusion Rate of Oxygen on Soil Corrosion and Evaluation of that in Soil

Kenta Fujihashi, Ryosuke Nakagami, Wataru Oshikawa

pp. 200-209

DOI:

10.3323/jcorr.73.200

Abstract

Soil corrosion rate for architecture and civil engineering is regarded as 0.02 mm/year regardless of the soil. However, it is considered that corrosion rates of each soil are different because soil properties such as particle size, water content, chemical composition and pH are different. In this study, we measured dissolved oxygen diffusion coefficient of each soil and each water content and evaluated the charge transfer resistance of each dissolved oxygen concentration by AC impedance method, to investigate the effect of dissolved oxygen diffusion on soil corrosion.

Readers Who Read This Article Also Read

Effects of Si in Water on Corrosion Behavior of Hot-dip Galvanizing

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Visualization of Microscopic Hydrogen Diffusion in Polycrystalline Pure Ni Using an Ir Complex

Zairyo-to-Kankyo Vol.73(2024), No.8

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Effect of Diffusion Rate of Oxygen on Soil Corrosion and Evaluation of that in Soil

Bibtex

Ris

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Zairyo-to-Kankyo Vol. 73 (2024), No. 8

Keyword Ranking

blast furnace

melt

ステンレス鋼 ti-ni

technol. plast

experimental study on heat transfer characteristics of a moving single-nozzle jet impingement

invar

トラスの弾性挙動

連続鋳造凝固計算

阿部英夫

a. back, isij int

Zairyo-to-Kankyo Vol. 73 (2024), No. 8

JSCE for Me

Share it with SNS

Effects of Si in Water on Corrosion Behavior of Hot-dip Galvanizing

Share it with SNS

Visualization of Microscopic Hydrogen Diffusion in Polycrystalline Pure Ni Using an Ir Complex

Share it with SNS

Effect of Diffusion Rate of Oxygen on Soil Corrosion and Evaluation of that in Soil

Share it with SNS

Article Access Ranking

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

Wettability of CaS Against Molten Iron at 1873 K

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

New Electromagnetic Flow Control System for Optimization of Molten Steel Flow in Continuous Casting Mold

Effect of Water on the Non-Isothermal Hydrogen-Water Reduction of Industrial Hematite Pellets

Effects of alloying-element addition on hydrogen diffusion and hydrogen absorption in Ni

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

Micromechanical characterization of nano-bainite steel

Experimental Study on Heat Transfer Characteristics of a Moving Single-Nozzle Jet Impingement

High temperature zinc vapor confinement in snout by using wind curtain

Advanced Search

Zairyo-to-Kankyo Vol. 73 (2024), No. 8

Keyword Ranking

blast furnace

melt

ステンレス鋼 ti-ni

technol. plast

experimental study on heat transfer characteristics of a moving single-nozzle jet impingement

invar

トラスの弾性挙動

連続鋳造 凝固計算

阿部英夫

a. back, isij int

Zairyo-to-Kankyo Vol. 73 (2024), No. 8

JSCE for Me

Share it with SNS

Effects of Si in Water on Corrosion Behavior of Hot-dip Galvanizing

Share it with SNS

Visualization of Microscopic Hydrogen Diffusion in Polycrystalline Pure Ni Using an Ir Complex

Share it with SNS

Effect of Diffusion Rate of Oxygen on Soil Corrosion and Evaluation of that in Soil

Share it with SNS

Article Access Ranking

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

Wettability of CaS Against Molten Iron at 1873 K

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

New Electromagnetic Flow Control System for Optimization of Molten Steel Flow in Continuous Casting Mold

Effect of Water on the Non-Isothermal Hydrogen-Water Reduction of Industrial Hematite Pellets

Effects of alloying-element addition on hydrogen diffusion and hydrogen absorption in Ni

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

Micromechanical characterization of nano-bainite steel

Experimental Study on Heat Transfer Characteristics of a Moving Single-Nozzle Jet Impingement

High temperature zinc vapor confinement in snout by using wind curtain

Advanced Search

連続鋳造凝固計算

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