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Zairyo-to-Kankyo
Vol. 61 (2012), No. 6

Zairyo-to-Kankyo Vol. 61 (2012), No. 6

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

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13 Dec. (Last 30 Days)

Zairyo-to-Kankyo Vol. 61 (2012), No. 6

Let's Learn from Biodiversity

Kimio Ito

pp. 235-

DOI:

10.3323/jcorr.61.235

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Article Title

Let's Learn from Biodiversity

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Ris

Hydrogen Absorption Behavior of Steel Bar for Prestressed Concrete in a Solution of Ammonium Thiocyanate

Tomoki Doshida, Kenichi Takai, Mikiyuki Ichiba

pp. 249-256

DOI:

10.3323/jcorr.61.249

Abstract

A solution of ammonium thiocyanate is used in the FIP (Fédération International de la Précontrainte) test as a hydrogen charging method. Though this method is comparatively simple, fracture time in the FIP test and hydrogen content often differ among various testing institutes. However, the detailed hydrogen absorption behavior in the solution is still not clear. In this context, the effects of existing states of hydrogen, oxide film on the specimen surface, specific solution volume to specimen surface area, immersion time and solution temperature on the hydrogen absorption behavior of a steel bar for reinforcing prestressed concrete were investigated by immersing it in the solution. The amount of absorbed hydrogen increased with immersion time, reached its maximum, and then decreased with increasing immersion time. A main factor of the decrease in the amount of absorbed hydrogen was corrosion products, including Fe, O and S, formed on the specimen surface, since the amount of absorbed hydrogen increased again as a result of merely polishing the surface. This indicates that corrosion products formed on immersing specimens in a solution of ammonium thiocyanate strongly affect hydrogen absorption behavior. Whereas, variation of the solution, such as increase in pH, during immersion also affects slightly hydrogen absorption behavior.

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Zairyo-to-Kankyo Vol. 61 (2012), No. 6

Keyword Ranking

1

17

mr.

神戸製鋼 s低減技術

blast furnace charging

1'

jyi=

\

dual phase steel

Zairyo-to-Kankyo Vol. 61 (2012), No. 6

Let's Learn from Biodiversity

Share it with SNS

Hydrogen Absorption Behavior of Steel Bar for Prestressed Concrete in a Solution of Ammonium Thiocyanate

Share it with SNS

Article Access Ranking

Delayed Fracture Mechanism of 1700 MPa-Class Quenched and Tempered Bolt under Atmospheric Corrosion Environment

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

Effect of B on Surface Oxidation Behavior and Phosphatability of Si-Mn-added Cold-Rolled Steel Sheets

Factors Influencing the Bonding Phase Structure of Iron Ore Sinters

Effect of microstructural heterogeneity on fatigue limit of as-quenched low-carbon low-alloy martensitic steel

Prussian blue as a fully reversible hydrogenochromic material for visualizing hydrogen distribution in Fe sheet

Progress of Strip Casting Technology for Steel; Historical Developments

Research Progress on Optimal Blending of Iron Ore Powders for Sintering

Competitive Substitution of CaO for MnO in CaO–Al₂O₃–SiO₂–MnO Oxides: Atomic-scale Insights into Structural Depolymerization and Inclusion Properties via Molecular Dynamics Simulations

Microstructures and Reduction Properties of High CaO Concentration Sintered Ore

Advanced Search

Zairyo-to-Kankyo Vol. 61 (2012), No. 6

Keyword Ranking

1

17

mr.

神戸製鋼 s低減技術

blast furnace charging

1'

jyi=

\

dual phase steel

Zairyo-to-Kankyo Vol. 61 (2012), No. 6

Let's Learn from Biodiversity

Share it with SNS

Hydrogen Absorption Behavior of Steel Bar for Prestressed Concrete in a Solution of Ammonium Thiocyanate

Share it with SNS

Article Access Ranking

Delayed Fracture Mechanism of 1700 MPa-Class Quenched and Tempered Bolt under Atmospheric Corrosion Environment

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

Effect of B on Surface Oxidation Behavior and Phosphatability of Si-Mn-added Cold-Rolled Steel Sheets

Factors Influencing the Bonding Phase Structure of Iron Ore Sinters

Effect of microstructural heterogeneity on fatigue limit of as-quenched low-carbon low-alloy martensitic steel

Prussian blue as a fully reversible hydrogenochromic material for visualizing hydrogen distribution in Fe sheet

Progress of Strip Casting Technology for Steel; Historical Developments

Research Progress on Optimal Blending of Iron Ore Powders for Sintering

Competitive Substitution of CaO for MnO in CaO–Al2O3–SiO2–MnO Oxides: Atomic-scale Insights into Structural Depolymerization and Inclusion Properties via Molecular Dynamics Simulations

Microstructures and Reduction Properties of High CaO Concentration Sintered Ore

Advanced Search

Competitive Substitution of CaO for MnO in CaO–Al₂O₃–SiO₂–MnO Oxides: Atomic-scale Insights into Structural Depolymerization and Inclusion Properties via Molecular Dynamics Simulations