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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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Vol. 73 (2024)
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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

仁井谷冷却 camp-isij

high carbon steel crack corner

prediction blast furnace

cao sio2 slag co2 aging

centrifugal flow tundish

cu 脆化 ni

embr

establishment of evaluation and prediction system of comprehensive state based on big data technology in a commercial blast furnace

production of thin wall welded titanium tube s by high frequency pulsed arc welding

仁井谷

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

Interactions between interstitial and substitutional elements of solute diatomic and triatomic clusters in α-Fe from first-principles calculations

Effect of Wettability on Droplet Agglomeration in Two Immiscible Liquids

Thermodynamic Analysis on Slag/Metal Reactions in Steelmaking Process Using Direct Reduced Iron and Steel Scraps

The Crystal Structure of As-quenched Fe–C Martensite

Comparison between the Lüders and Portevin–Le Chatelier bands in the low-strain-rate tensile testing of ultralow-carbon ferritic steel

Molecular dynamics of solidification

Production of silicon by microwave heating

Large Eddy Simulation on Flow Structure in Centrifugal Flow Tundish

Basic Study on Flow Behavior of Molten Steel in a Continuous Casting Machine in the Presence of Static Magnetic Field Parallel to the Slab Width Direction

Attitude Control of a 2-wheel Satellite by Using a Time-State Control Form

Advanced Search

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

Keyword Ranking

仁井谷 冷却 camp-isij

high carbon steel crack corner

prediction blast furnace

cao sio2 slag co2 aging

centrifugal flow tundish

cu 脆化 ni

embr

establishment of evaluation and prediction system of comprehensive state based on big data technology in a commercial blast furnace

production of thin wall welded titanium tube s by high frequency pulsed arc welding

仁井谷

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

Interactions between interstitial and substitutional elements of solute diatomic and triatomic clusters in α-Fe from first-principles calculations

Effect of Wettability on Droplet Agglomeration in Two Immiscible Liquids

Thermodynamic Analysis on Slag/Metal Reactions in Steelmaking Process Using Direct Reduced Iron and Steel Scraps

The Crystal Structure of As-quenched Fe–C Martensite

Comparison between the Lüders and Portevin–Le Chatelier bands in the low-strain-rate tensile testing of ultralow-carbon ferritic steel

Molecular dynamics of solidification

Production of silicon by microwave heating

Large Eddy Simulation on Flow Structure in Centrifugal Flow Tundish

Basic Study on Flow Behavior of Molten Steel in a Continuous Casting Machine in the Presence of Static Magnetic Field Parallel to the Slab Width Direction

Attitude Control of a 2-wheel Satellite by Using a Time-State Control Form

Advanced Search

仁井谷冷却 camp-isij