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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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04 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

04 Apr. (Last 30 Days)

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

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Hydrogen-induced vacancy formation process in austenitic stainless steel 304

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Microstructural Analysis of Reduced Multicomponent Calcium Ferrite Using STEM-EDS and 3DAP

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PREFACE

MATERIALS TRANSACTIONS Vol.54(2013), No.6
Bend Failure Mechanism of Zinc Coated Advanced High Strength Steel

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Chemical State Evolution of Iron Ore Sinter Investigated by Wide-Area Imaging XAFS

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

Keyword Ranking

blast furnace

ferrocoke

high-strength steel alloys

isij international

slag/metal reactions in steelmaking

tramp elements

trip steel martensitic transformation

bend

continuous casting slab

crystallization

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

Analysis of Peritectic Solidification of Ag–Sn Alloys by Unidirectional Solidification Experiment

Thermodynamic Calculation of Grain Boundary Composition in Ferritic Steels and Its Application for Controlling the Hall–Petch Coefficient

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

Hydrogen-induced vacancy formation process in austenitic stainless steel 304

Microstructural Analysis of Reduced Multicomponent Calcium Ferrite Using STEM-EDS and 3DAP

PREFACE

Bend Failure Mechanism of Zinc Coated Advanced High Strength Steel

Chemical State Evolution of Iron Ore Sinter Investigated by Wide-Area Imaging XAFS

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