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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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Keyword Ranking

18 May. (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

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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―

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Ris

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

Keyword Ranking

blast furnace

thermo dynamics and kinetics of coal gasification in a liquid iron bath

improvement in mechanical properties of a high-strength hot-rolled automobile steel

effect of {110} < 229 >

isij international vol. 61 (2021)

k. sawada

machine learning

maruyama k, sawada k, koike j i. strengthening mechanisms of creep resistant tempered martensitic steel

possible relationship between energy dissipation and agitation in steel processing operations.

segeregation prevention orebedding

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

Effects of High Magnetic Field on Microstructure and Mechanical Property of Medium Mn Steels Tempered at Low-Temperature after Deep Cryogenic Treatment

Progress in modelling microstructural evolution and changes of mechanical properties for hot rolled steels -the path from semi-empirical through machine learning to industrial foundation models

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

日本鉄鋼協会第113回講演大会講演概要集(I) その4

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

Solidification Characteristics and TiC Formation Behaviour in Alloy 800H

High temperature zinc vapor confinement in snout by using wind curtain

日本鉄鋼協会第113回講演大会講演概要集(I) その2

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

Keyword Ranking

blast furnace

thermo dynamics and kinetics of coal gasification in a liquid iron bath

improvement in mechanical properties of a high-strength hot-rolled automobile steel

effect of {110} < 229 >

isij international vol. 61 (2021)

k. sawada

machine learning

maruyama k, sawada k, koike j i. strengthening mechanisms of creep resistant tempered martensitic steel

possible relationship between energy dissipation and agitation in steel processing operations.

segeregation prevention orebedding

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

Effects of High Magnetic Field on Microstructure and Mechanical Property of Medium Mn Steels Tempered at Low-Temperature after Deep Cryogenic Treatment

Progress in modelling microstructural evolution and changes of mechanical properties for hot rolled steels -the path from semi-empirical through machine learning to industrial foundation models

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

日本鉄鋼協会第113回講演大会 講演概要集(I) その4

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

Solidification Characteristics and TiC Formation Behaviour in Alloy 800H

High temperature zinc vapor confinement in snout by using wind curtain

日本鉄鋼協会第113回講演大会 講演概要集(I) その2

Advanced Search

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

日本鉄鋼協会第113回講演大会講演概要集(I) その4

日本鉄鋼協会第113回講演大会講演概要集(I) その2