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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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Vol. 73 (2024)
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22 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

hydrogen reduction of iron ore

gasification

characterization of coal and biomass based on kinetic parameter distributions for pyrolysis

kinetics of decarburization of liquid iron with high concentration ofcarbon

mechanisms of liquefaction and pyrolysis reaction of biomass

hydrogen reduction

steel

19al6mg

automotive wheel

deguchi

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

Wettability of CaS against molten iron at 1873 K

Precipitation Behavior of MnS from Molten Iron to Al₂O₃ during Solidification

Reduction and Melting Behaviors of Iron Oxide Composite with Carbon Deposited Using CO-CO₂-H₂ Mixed Gas

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

In-situ Observation of Precipitation and Growth of MnS Inclusions during Solidification of a High Sulfur Steel

In-situ Observation of Inclusion Formation Behaviors during Solidification Process Using Model Alloy

Evaluation method for the three-dimensional behavior of bubbles in a liquid metal under horizontal magnetic field using ultrasonic tomography

Effect of Heating Rate on the Non-Isothermal Hydrogen Reduction of Hematite Pellets

Effects of Manganese on Microstructure and Work-hardening Behavior of Low-carbon Lath Martensitic Steel

Chemical and Mechanical Factors on Phosphorus Dissolution Behavior from P-concentrated Slag

Advanced Search

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

Keyword Ranking

hydrogen reduction of iron ore

gasification

characterization of coal and biomass based on kinetic parameter distributions for pyrolysis

kinetics of decarburization of liquid iron with high concentration ofcarbon

mechanisms of liquefaction and pyrolysis reaction of biomass

hydrogen reduction

steel

19al6mg

automotive wheel

deguchi

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

Wettability of CaS against molten iron at 1873 K

Precipitation Behavior of MnS from Molten Iron to Al2O3 during Solidification

Reduction and Melting Behaviors of Iron Oxide Composite with Carbon Deposited Using CO-CO2-H2 Mixed Gas

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

In-situ Observation of Precipitation and Growth of MnS Inclusions during Solidification of a High Sulfur Steel

In-situ Observation of Inclusion Formation Behaviors during Solidification Process Using Model Alloy

Evaluation method for the three-dimensional behavior of bubbles in a liquid metal under horizontal magnetic field using ultrasonic tomography

Effect of Heating Rate on the Non-Isothermal Hydrogen Reduction of Hematite Pellets

Effects of Manganese on Microstructure and Work-hardening Behavior of Low-carbon Lath Martensitic Steel

Chemical and Mechanical Factors on Phosphorus Dissolution Behavior from P-concentrated Slag

Advanced Search

Precipitation Behavior of MnS from Molten Iron to Al₂O₃ during Solidification

Reduction and Melting Behaviors of Iron Oxide Composite with Carbon Deposited Using CO-CO₂-H₂ Mixed Gas