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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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30 Jul. (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

blast furnace

hot dip aluminising

加炭

desulpherization caf2

experimental study on heat transfer characteristics of a moving single-nozzle jet impingement

melt

olac

shear stress distribution

statistical features of complex systems

statistical features of complex systems kuninaka

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

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

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

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

Wettability of CaS Against Molten Iron at 1873 K

Experimental Study on Heat Transfer Characteristics of a Moving Single-Nozzle Jet Impingement

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

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

Surface Cracking in Hot Rolling Process of Cu Bearing Steel Bar

Progress in Modelling Microstructural Evolution and Changes of Mechanical Properties for Hot Rolled Steels -The Path from Semi-empirical through Machine Learning to Industrial Foundation Models

Advanced Search

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

Keyword Ranking

blast furnace

hot dip aluminising

加炭

desulpherization caf2

experimental study on heat transfer characteristics of a moving single-nozzle jet impingement

melt

olac

shear stress distribution

statistical features of complex systems

statistical features of complex systems kuninaka

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

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

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

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

Wettability of CaS Against Molten Iron at 1873 K

Experimental Study on Heat Transfer Characteristics of a Moving Single-Nozzle Jet Impingement

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

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

Surface Cracking in Hot Rolling Process of Cu Bearing Steel Bar

Progress in Modelling Microstructural Evolution and Changes of Mechanical Properties for Hot Rolled Steels -The Path from Semi-empirical through Machine Learning to Industrial Foundation Models

Advanced Search

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

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