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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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04 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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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

filiform corrosion of zn-mg-al coated steel

grain boundary amelioration

electromagnetic steel plate

inclusions and reduction of their amount in the continuous casting process

y. iwanaga

y. iwanaga: tetsu to hagane, 1982, vol. 68, pp. 740–49.

1982

bridging oxygen

controlled plane reduction

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

Microstructure estimation by combining deep learning and phase transformation model

Visualization of hydrogen and hydrogen-induced defects in tensile-deformed pure iron using hydrogen microprint and tritium autoradiography

Experiment and Conformation of Non-sinusoidal Oscillation Waveform Function for Continuous Casting Mold

Modification of Non-metallic Inclusions in Steel by Calcium Treatment: A Review

Critical Granular Size Impact on Softening and Melting Behaviors of Sinters: From the Viewpoints of the Competition between In-situ Liquid Generation and Holdup

Experimental and Numerical Study on Tapping of Two Liquids through a Single Tap-Hole

Fundamentally Different Magnetoresistance Mechanisms in Related Co/Pd and Co/Pt Multilayers for Spintronic Applications

First-Principles Calculations of Hydrogen Trapping Energy on Incoherent Interfaces of Aluminum Alloys

Hydrogen Embrittlement Property of a 1.5 GPa Dual-Phase Steel Evaluated Using U-bending Test: A Comparison with Tempered Martensitic Steel with Identical Tensile Strength

In-situ Observation of Sintering Interface between Al₂O₃ Particle / Single Crystalline Al₂O₃ Plate through Single Crystalline Al₂O₃ Plate

Advanced Search

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

Keyword Ranking

filiform corrosion of zn-mg-al coated steel

grain boundary amelioration

electromagnetic steel plate

inclusions and reduction of their amount in the continuous casting process

y. iwanaga

y. iwanaga: tetsu to hagane, 1982, vol. 68, pp. 740–49.

1982

bridging oxygen

controlled plane reduction

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

Microstructure estimation by combining deep learning and phase transformation model

Visualization of hydrogen and hydrogen-induced defects in tensile-deformed pure iron using hydrogen microprint and tritium autoradiography

Experiment and Conformation of Non-sinusoidal Oscillation Waveform Function for Continuous Casting Mold

Modification of Non-metallic Inclusions in Steel by Calcium Treatment: A Review

Critical Granular Size Impact on Softening and Melting Behaviors of Sinters: From the Viewpoints of the Competition between In-situ Liquid Generation and Holdup

Experimental and Numerical Study on Tapping of Two Liquids through a Single Tap-Hole

Fundamentally Different Magnetoresistance Mechanisms in Related Co/Pd and Co/Pt Multilayers for Spintronic Applications

First-Principles Calculations of Hydrogen Trapping Energy on Incoherent Interfaces of Aluminum Alloys

Hydrogen Embrittlement Property of a 1.5 GPa Dual-Phase Steel Evaluated Using U-bending Test: A Comparison with Tempered Martensitic Steel with Identical Tensile Strength

In-situ Observation of Sintering Interface between Al2O3 Particle / Single Crystalline Al2O3 Plate through Single Crystalline Al2O3 Plate

Advanced Search

In-situ Observation of Sintering Interface between Al₂O₃ Particle / Single Crystalline Al₂O₃ Plate through Single Crystalline Al₂O₃ Plate