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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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06 Aug. (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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Hydrogen Absorption Behavior of Steel Bar for Prestressed Concrete in a Solution of Ammonium Thiocyanate

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

Keyword Ranking

hot dip aluminising

blast furnace

加炭

desulpherization caf2

olac

shear stress distribution

statistical features of complex systems

statistical features of complex systems kuninaka

ushio

トーピード

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

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

Copper removal of liquid steel containing 0.25 % carbon using Fe₂O₃-CaCl₂-SiO₂ flux

Effect of BN surface segregation on coatability in hot-dip galvanizing of B-added steel

Growth, Removal, and Agglomeration of Various Type of Oxide Inclusions in Molten Steel

Factors affecting generation of iron fines in cold sheet rolling of steel

Effect of Deoxidizer Addition Sequence on Cleanliness of Al-killed and S-containing Steel: Industrial Trials and Thermodynamic Analysis

First-principles estimation of effect of solute atoms on hydrogen penetration from (100) surface in alpha iron: a rudimentary study of inhibitor elements

Progress of Hot Metal Treatment Technology and Future Outlook

Surface Cracking in Hot Rolling Process of Cu Bearing Steel Bar

Integrated Steelworks that Reduce CO₂ Emissions by More Than 80% — Challenge for Carbon-Neutral Integrated Steelworks —

Advanced Search

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

Keyword Ranking

hot dip aluminising

blast furnace

加炭

desulpherization caf2

olac

shear stress distribution

statistical features of complex systems

statistical features of complex systems kuninaka

ushio

トーピード

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

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

Copper removal of liquid steel containing 0.25 % carbon using Fe2O3-CaCl2-SiO2 flux

Effect of BN surface segregation on coatability in hot-dip galvanizing of B-added steel

Growth, Removal, and Agglomeration of Various Type of Oxide Inclusions in Molten Steel

Factors affecting generation of iron fines in cold sheet rolling of steel

Effect of Deoxidizer Addition Sequence on Cleanliness of Al-killed and S-containing Steel: Industrial Trials and Thermodynamic Analysis

First-principles estimation of effect of solute atoms on hydrogen penetration from (100) surface in alpha iron: a rudimentary study of inhibitor elements

Progress of Hot Metal Treatment Technology and Future Outlook

Surface Cracking in Hot Rolling Process of Cu Bearing Steel Bar

Integrated Steelworks that Reduce CO2 Emissions by More Than 80% — Challenge for Carbon-Neutral Integrated Steelworks —

Advanced Search

Copper removal of liquid steel containing 0.25 % carbon using Fe₂O₃-CaCl₂-SiO₂ flux

Integrated Steelworks that Reduce CO₂ Emissions by More Than 80% — Challenge for Carbon-Neutral Integrated Steelworks —