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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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13 Oct. (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―

Bibtex

Ris

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

Keyword Ranking

red mud

swirling flow effect

カーボンニュートラル製鉄

carbon combustion rate chemical reaction diffusion

iron extraction from red mud primarily

miyano

ohno kohichiro

低温用鋼

大野光一郎

* kim et al. isij international vol. 52, pp. 199-206 (2013)

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

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

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

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

Capillary Infiltration of Slag in Hydrogen-Direct Reduced Iron and Influence on Melting

Novel application of photoelectron yield spectroscopy to the detection of hydrogen in steel under atmospheric conditions

Impact of Bosh Gas Volume on the Competitive Interaction Between CO and H₂ Reduction Reactions and Carbon-Saving Potential in the Top Gas Recycling Blast Furnace

Continuous recrystallization of ferrite matrix manifested by cementite pinning in deformed pearlite

Formation Behavior of Plating Films of Zn−V Composite Electroplated Steel Sheets and its Heat Dissipation Characteristics

Numerical analysis of low-carbon blast furnace operations by coke oven and hydrogen gases injection in COURSE50 experimental blast furnace

Advancements in the development, industrial production, and applications of ultra-high nitrogen low alloy steel

Advanced Search

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

Keyword Ranking

red mud

swirling flow effect

カーボンニュートラル 製鉄

carbon combustion rate chemical reaction diffusion

iron extraction from red mud primarily

miyano

ohno kohichiro

低温用鋼

大野光一郎

* kim et al. isij international vol. 52, pp. 199-206 (2013)

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

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

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

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

Capillary Infiltration of Slag in Hydrogen-Direct Reduced Iron and Influence on Melting

Novel application of photoelectron yield spectroscopy to the detection of hydrogen in steel under atmospheric conditions

Impact of Bosh Gas Volume on the Competitive Interaction Between CO and H2 Reduction Reactions and Carbon-Saving Potential in the Top Gas Recycling Blast Furnace

Continuous recrystallization of ferrite matrix manifested by cementite pinning in deformed pearlite

Formation Behavior of Plating Films of Zn−V Composite Electroplated Steel Sheets and its Heat Dissipation Characteristics

Numerical analysis of low-carbon blast furnace operations by coke oven and hydrogen gases injection in COURSE50 experimental blast furnace

Advancements in the development, industrial production, and applications of ultra-high nitrogen low alloy steel

Advanced Search

カーボンニュートラル製鉄

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

Impact of Bosh Gas Volume on the Competitive Interaction Between CO and H₂ Reduction Reactions and Carbon-Saving Potential in the Top Gas Recycling Blast Furnace