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Zairyo-to-Kankyo
Vol. 66 (2017), No. 2

Zairyo-to-Kankyo Vol. 66 (2017), No. 2

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

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01 Apr. (Last 30 Days)

Zairyo-to-Kankyo Vol. 66 (2017), No. 2

Getting over the Existing Image

Masayuki Sagara

pp. 47-48

DOI:

10.3323/jcorr.66.47

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Article Title

Getting over the Existing Image

Bibtex

Ris

Development of Artificial Rainfall Equipment for Studying the Effect of Rain on the Corrosion Behaviors

Dara To, Tadashi Shinohara, Osamu Umezawa

pp. 58-61

DOI:

10.3323/jcorr.66.58

Abstract

Atmospheric corrosion is an electrochemical process which can only proceed in the presence of an electrolyte film. Rain is one of the main factors in initiating the time of wetness and transporting the chemical substance from the atmosphere to metal surface that guide to accelerate the corrosion attack. In this case study, an artificial rainfall equipment was developed with the aim of defining the behaviors of atmospheric corrosion which is affected by rain and chemical species. The Atmospheric Corrosion Monitoring （ACM） sensor which consists of a Fe-Ag couple was used to measure the corrosivity of the rainfall solution by finding the relation between the Corrosion Rate （CR） and the sensor output. The controllable precipitation rate and its distribution facilitate in investigating the effect of rainfall on the corrosion behaviors. The relation between the sensors output and CR enable to predict the corrosivity of the atmosphere. Thus, the developed artificial rainfall equipment is an essential and reliable tool for studying the corrosion behaviors under the effect of rain.

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Development of Artificial Rainfall Equipment for Studying the Effect of Rain on the Corrosion Behaviors

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Analysis of Water Chemistry Change Behavior of the Spent Fuel Pool Due to the Injection of Sea Water and/or Fresh Water to the Fukushima Daiichi Nuclear Power Station of Tokyo Electric Power Company

Masayoshi Ozawa, Masatsune Akashi

pp. 62-70

DOI:

10.3323/jcorr.66.62

Abstract

Concentration of SO₄^2－ and HCO₃^－ which affect to corrosion for carbon steels were estimated by analysis using pH, Cl^－ concentration and electrical conductivity κ, in the spent fuel pools （SFP） of Fukushima Daiichi Nuclear Power Station （1F） in which sea water and/or fresh water were injected. Electrical conductivity κ in the SFP of 1F Unit 1 in which fresh water was injected, were presumed accurately by analysis using observed Cl^－ concentration, concentration of SO₄^2－ and HCO₃^－ which were estimated. The pH measurements exceeded the estimate in 1F Units 2 and 3 where sea water was injected. Each of dissolution reaction of iron, dissociation of H₄N₂, and the production of ammonia by the decomposition of H₄N₂ has been evaluated as not the cause of the high pH by itself. It was estimated that the calcium ions from the concrete debris had been continuously supplied to water in SFP of the unit 3 during purification treatment period. It was evaluated that self-passivation conditions of carbon steel were achieved in the water chemistry after the purification process completed for the Fukushima Daiichi Nuclear Power Station of Units 2 to 4. In addition, it was evaluated that self-passivation of carbon steel was achieved in the environment of unit 1.

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Article Title

Analysis of Water Chemistry Change Behavior of the Spent Fuel Pool Due to the Injection of Sea Water and/or Fresh Water to the Fukushima Daiichi Nuclear Power Station of Tokyo Electric Power Company

Bibtex

Ris

Article Access Ranking

01 Apr. (Last 30 Days)

Wettability of CaS Against Molten Iron at 1873 K

ISIJ International Vol.65(2025), No.2
Analysis of Peritectic Solidification of Ag–Sn Alloys by Unidirectional Solidification Experiment

Tetsu-to-Hagané Advance Publication
Thermodynamic Calculation of Grain Boundary Composition in Ferritic Steels and Its Application for Controlling the Hall–Petch Coefficient

ISIJ International Advance Publication
Hydrogen-induced vacancy formation process in austenitic stainless steel 304

ISIJ International Advance Publication
Microstructural Analysis of Reduced Multicomponent Calcium Ferrite Using STEM-EDS and 3DAP

Tetsu-to-Hagané Advance Publication
Effects of interface anisotropy on the solidification morphology of zinc alloys and development of data assimilation for their estimation

ISIJ International Advance Publication
Perspectives on the Promising Pathways to Zero Carbon Emissions in the Steel Industry toward 2050

ISIJ International Vol.65(2025), No.2
Chemical State Evolution of Iron Ore Sinter Investigated by Wide-Area Imaging XAFS

ISIJ International Advance Publication
PREFACE

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

ISIJ International Vol.58(2018), No.8

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Zairyo-to-Kankyo Vol. 66 (2017), No. 2

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. 66 (2017), No. 2

Getting over the Existing Image

Share it with SNS

Development of Artificial Rainfall Equipment for Studying the Effect of Rain on the Corrosion Behaviors

Share it with SNS

Analysis of Water Chemistry Change Behavior of the Spent Fuel Pool Due to the Injection of Sea Water and/or Fresh Water to the Fukushima Daiichi Nuclear Power Station of Tokyo Electric Power Company

Share it with SNS

Article Access Ranking

Wettability of CaS Against Molten Iron at 1873 K

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

Hydrogen-induced vacancy formation process in austenitic stainless steel 304

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

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

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

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

PREFACE

Bend Failure Mechanism of Zinc Coated Advanced High Strength Steel

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