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Zairyo-to-Kankyo
Vol. 68 (2019), No. 12

Zairyo-to-Kankyo Vol. 68 (2019), No. 12

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

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26 Apr. (Last 30 Days)

Zairyo-to-Kankyo Vol. 68 (2019), No. 12

Difficulty in Troubleshooting

Kazuharu Sobue

pp. 331-332

DOI:

10.3323/jcorr.68.331

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Article Title

Difficulty in Troubleshooting

Bibtex

Ris

Evaluation of Relationship between Corrosion Thickness Reduction and Propagation Mode of AE Wave

Takuya Kurihara, Takuma Kagami, Matsuo Takuma, Taro Kono, Naoto Nakasato

pp. 342-346

DOI:

10.3323/jcorr.68.342

Abstract

Corrosion loss evaluation method for steel structure was investigated by acoustic emission （AE） signals with characteristics of Lamb wave. Relationship between wavelet coefficient of S₀ mode of Lamb wave AE signals and AE source depth were evaluated. The amplitude of the S₀ mode becomes higher as the AE source become closer to the thickness center. Thus, the corrosion depth can be evaluated by the strength ratio of S₀ mode and A₀ mode of Lamb wave AE signals.

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Article Title

Evaluation of Relationship between Corrosion Thickness Reduction and Propagation Mode of AE Wave

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Observation of Pit Initiation and Growth of Stainless Steel under a Chloride Solution Droplet―Effect of S Content on Pit Initiation, Growth and Repassivation―

Azusa Ooi, Yaoki Ise, Eiji Tada, Atsushi Nishikata

pp. 347-354

DOI:

10.3323/jcorr.68.347

Abstract

A system that can stop pit growth automatically at any time after the pit initiation under a chloride solution droplet was developed. Using this system, atmospheric pitting corrosion of austenitic stainless steels with various sulfur （S） concentrations was investigated. It was confirmed that initiation site of pitting corrosion was manganese sulfide （MnS） inclusions under the droplets regardless of S concentrations. In addition, the growth behavior of the active dissolution area doesn't also depend on S concentrations. When these specimens were subjected to wet-dry cycle tests, probability of pitting corrosion increases with S concentrations due to increasing initiation site, and there is no clear difference in chloride concentrations for onset of the pitting corrosion. On the other hand, repassivation behavior is strongly depends on S concentrations.

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Article Title

Observation of Pit Initiation and Growth of Stainless Steel under a Chloride Solution Droplet―Effect of S Content on Pit Initiation, Growth and Repassivation―

Bibtex

Ris

Article Access Ranking

26 Apr. (Last 30 Days)

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Preface

ISIJ International Vol.36(1996), No.Suppl

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Zairyo-to-Kankyo Vol. 68 (2019), No. 12

Keyword Ranking

blast furnace

ferrocoke

recrystallizational annealing

flake

inclusion

steel

camp isij

dp鋼曲げ性

inclusion formation

integration of hydrogen-blended gas into steelmaking processes: a case study of jfe steel

Zairyo-to-Kankyo Vol. 68 (2019), No. 12

Difficulty in Troubleshooting

Share it with SNS

Evaluation of Relationship between Corrosion Thickness Reduction and Propagation Mode of AE Wave

Share it with SNS

Observation of Pit Initiation and Growth of Stainless Steel under a Chloride Solution Droplet―Effect of S Content on Pit Initiation, Growth and Repassivation―

Share it with SNS

Article Access Ranking

Wettability of CaS Against Molten Iron at 1873 K

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

Thermodynamic evaluation of interaction parameters of solutes in molten iron

Effects of interface anisotropy on the solidification morphology of zinc alloys and development of data assimilation for their estimation

Prediction Studies of Strip Centering with Flotation Dryer

Ammonia as a Green Energy Carrier to Lower Blast Furnace CO₂ Emissions

Crater End Detection in Continuous Casting by Longitudinal and Shear Wave Hybrid Technique with High Sensitivity EMAT

Effect of Pre-Reduced Structures on Deformation and Shrinkage Behavior of Iron Ore Pellets under CO and H₂ Reduction

Quantitative understanding of solute concentration distribution by microsegregation during solidification

Preface

Advanced Search

Zairyo-to-Kankyo Vol. 68 (2019), No. 12

Keyword Ranking

blast furnace

ferrocoke

recrystallizational annealing

flake

inclusion

steel

camp isij

dp鋼 曲げ性

inclusion formation

integration of hydrogen-blended gas into steelmaking processes: a case study of jfe steel

Zairyo-to-Kankyo Vol. 68 (2019), No. 12

Difficulty in Troubleshooting

Share it with SNS

Evaluation of Relationship between Corrosion Thickness Reduction and Propagation Mode of AE Wave

Share it with SNS

Observation of Pit Initiation and Growth of Stainless Steel under a Chloride Solution Droplet―Effect of S Content on Pit Initiation, Growth and Repassivation―

Share it with SNS

Article Access Ranking

Wettability of CaS Against Molten Iron at 1873 K

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

Thermodynamic evaluation of interaction parameters of solutes in molten iron

Effects of interface anisotropy on the solidification morphology of zinc alloys and development of data assimilation for their estimation

Prediction Studies of Strip Centering with Flotation Dryer

Ammonia as a Green Energy Carrier to Lower Blast Furnace CO2 Emissions

Crater End Detection in Continuous Casting by Longitudinal and Shear Wave Hybrid Technique with High Sensitivity EMAT

Effect of Pre-Reduced Structures on Deformation and Shrinkage Behavior of Iron Ore Pellets under CO and H2 Reduction

Quantitative understanding of solute concentration distribution by microsegregation during solidification

Preface

Advanced Search

dp鋼曲げ性

Ammonia as a Green Energy Carrier to Lower Blast Furnace CO₂ Emissions

Effect of Pre-Reduced Structures on Deformation and Shrinkage Behavior of Iron Ore Pellets under CO and H₂ Reduction