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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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31 Oct. (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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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

swirling flow effect

stress state coefficient

electromagnetic stirrer

boron

再現 haz熱サイクル材のミクロ組織におよぼすオーステナイト結晶粒径、酸化物粒子特性および酸化剤溶質元素濃度の影響

鉄鉱石粉

bake hardening

carbon combustion rate chemical reaction diffusion

i. tsukatani, s. okamoto and t. inoue: camp-isij, 5 (1992), 1831.

kikuma nakajima

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

Advanced Coil Cooling Model Incorporating Layering and Interface Effects of Strip Windings

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

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

Thermodynamic Evaluation of Interaction Parameters of Solutes in Molten Iron

A new simulation characterization method to reveal the causes of cracking for cast iron cooling staves

Research Progress on Optimal Blending of Iron Ore Powders for Sintering

Capillary Infiltration of Slag in Hydrogen-Direct Reduced Iron and Influence on Melting

Cellular automaton model for quantitative prediction of microsegregation in alloys

DEM-Based Optimization of Horizontal Segregation in Sintering Charging and proposal of a Novel Spreading Strategy

Advanced Search

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

Keyword Ranking

swirling flow effect

stress state coefficient

electromagnetic stirrer

boron

再現 haz熱サイクル材のミクロ組織におよぼすオーステナイト結晶粒径、酸化物粒子特性および酸化剤溶質元素濃度の影響

鉄鉱石粉

bake hardening

carbon combustion rate chemical reaction diffusion

i. tsukatani, s. okamoto and t. inoue: camp-isij, 5 (1992), 1831.

kikuma nakajima

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

Advanced Coil Cooling Model Incorporating Layering and Interface Effects of Strip Windings

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

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

Thermodynamic Evaluation of Interaction Parameters of Solutes in Molten Iron

A new simulation characterization method to reveal the causes of cracking for cast iron cooling staves

Research Progress on Optimal Blending of Iron Ore Powders for Sintering

Capillary Infiltration of Slag in Hydrogen-Direct Reduced Iron and Influence on Melting

Cellular automaton model for quantitative prediction of microsegregation in alloys

DEM-Based Optimization of Horizontal Segregation in Sintering Charging and proposal of a Novel Spreading Strategy

Advanced Search

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